Roll-forward enabled_branchs tech-debt cleanup.

This re-lands 95015a6861ebe3d93ff02ef0ba50dd4b66f9e94c, with fixes around
how "enabled_branches" executes. Notably, three important bugs were fixed:

1. Read the top-level enabled_branches (was accidentally set to [])
2. Uses current branch, not the commit-origin, to filter enabled_branches.

After this change, the `{PLAT} packaging` builds that are supposed to only
be run on `beta` or `stable` channels should no longer be acidentally run
on release-candidate branches.

Change-Id: Ib616d1948506f62d303f61fa88eb44d0dc853a18

Bug: https://github.com/flutter/flutter/issues/169875
Change-Id: I578e281e7e4e46e018d07872a22c118cf1f22931
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/66101
Commit-Queue: Matan Lurey <matanl@google.com>
Reviewed-by: John McDole <codefu@google.com>
diff --git a/recipes/release/release_builder.expected/base_linux_main_monorepo.json b/recipes/release/release_builder.expected/base_linux_main_monorepo.json
index a1ed037..59f256f 100644
--- a/recipes/release/release_builder.expected/base_linux_main_monorepo.json
+++ b/recipes/release/release_builder.expected/base_linux_main_monorepo.json
@@ -522,6 +522,147 @@
   },
   {
     "cmd": [],
+    "name": "engine.launch builds.get buildbucket id (2)",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@2@@@",
+      "@@@STEP_TEXT@8945511751514863184@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "bb",
+      "batch",
+      "-host",
+      "cr-buildbucket.appspot.com"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "prod:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "engine.launch builds.schedule (2)",
+    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/main\"}, \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/main\"}, \"priority\": 30, \"properties\": {\"$flutter/osx_sdk\": {\"sdk_version\": \"14a5294e\"}, \"build\": {\"drone_dimensions\": [\"os=Linux\"], \"enabled_branches\": [\"beta\", \"main\"], \"name\": \"linux packaging one\", \"properties\": {\"$flutter/osx_sdk\": {\"sdk_version\": \"14a5294e\"}, \"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"scheduler\": \"release\"}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-00000000133a\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@2@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"scheduleBuild\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\",@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"Linux Engine Drone\",@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"project\": \"prod\"@@@",
+      "@@@STEP_LOG_LINE@json.output@        },@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8922054662172514001\"@@@",
+      "@@@STEP_LOG_LINE@json.output@      }@@@",
+      "@@@STEP_LOG_LINE@json.output@    }@@@",
+      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@",
+      "@@@STEP_LOG_LINE@request@{@@@",
+      "@@@STEP_LOG_LINE@request@  \"requests\": [@@@",
+      "@@@STEP_LOG_LINE@request@    {@@@",
+      "@@@STEP_LOG_LINE@request@      \"scheduleBuild\": {@@@",
+      "@@@STEP_LOG_LINE@request@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"bucket\": \"try\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"builder\": \"Linux Engine Drone\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"project\": \"prod\"@@@",
+      "@@@STEP_LOG_LINE@request@        },@@@",
+      "@@@STEP_LOG_LINE@request@        \"dimensions\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"os\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"Linux\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ],@@@",
+      "@@@STEP_LOG_LINE@request@        \"exe\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"cipdVersion\": \"refs/heads/main\"@@@",
+      "@@@STEP_LOG_LINE@request@        },@@@",
+      "@@@STEP_LOG_LINE@request@        \"experimental\": \"NO\",@@@",
+      "@@@STEP_LOG_LINE@request@        \"experiments\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"luci.buildbucket.parent_tracking\": false@@@",
+      "@@@STEP_LOG_LINE@request@        },@@@",
+      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\",@@@",
+      "@@@STEP_LOG_LINE@request@        \"gerritChanges\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"change\": \"123456\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"host\": \"flutter-review.googlesource.com\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"patchset\": \"7\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"project\": \"mirrors/flutter\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ],@@@",
+      "@@@STEP_LOG_LINE@request@        \"gitilesCommit\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"host\": \"flutter.googlesource.com\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"project\": \"mirrors/flutter\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"ref\": \"refs/heads/main\"@@@",
+      "@@@STEP_LOG_LINE@request@        },@@@",
+      "@@@STEP_LOG_LINE@request@        \"priority\": 30,@@@",
+      "@@@STEP_LOG_LINE@request@        \"properties\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"$flutter/osx_sdk\": {@@@",
+      "@@@STEP_LOG_LINE@request@            \"sdk_version\": \"14a5294e\"@@@",
+      "@@@STEP_LOG_LINE@request@          },@@@",
+      "@@@STEP_LOG_LINE@request@          \"build\": {@@@",
+      "@@@STEP_LOG_LINE@request@            \"drone_dimensions\": [@@@",
+      "@@@STEP_LOG_LINE@request@              \"os=Linux\"@@@",
+      "@@@STEP_LOG_LINE@request@            ],@@@",
+      "@@@STEP_LOG_LINE@request@            \"enabled_branches\": [@@@",
+      "@@@STEP_LOG_LINE@request@              \"beta\",@@@",
+      "@@@STEP_LOG_LINE@request@              \"main\"@@@",
+      "@@@STEP_LOG_LINE@request@            ],@@@",
+      "@@@STEP_LOG_LINE@request@            \"name\": \"linux packaging one\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"properties\": {@@@",
+      "@@@STEP_LOG_LINE@request@              \"$flutter/osx_sdk\": {@@@",
+      "@@@STEP_LOG_LINE@request@                \"sdk_version\": \"14a5294e\"@@@",
+      "@@@STEP_LOG_LINE@request@              },@@@",
+      "@@@STEP_LOG_LINE@request@              \"is_fusion\": \"true\"@@@",
+      "@@@STEP_LOG_LINE@request@            },@@@",
+      "@@@STEP_LOG_LINE@request@            \"recipe\": \"release/something\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"scheduler\": \"release\"@@@",
+      "@@@STEP_LOG_LINE@request@          },@@@",
+      "@@@STEP_LOG_LINE@request@          \"build_identifier\": \"8945511751514863184\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"gclient_variables\": {},@@@",
+      "@@@STEP_LOG_LINE@request@          \"is_fusion\": \"true\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"parent_commit\": \"\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"recipe\": \"release/something\",@@@",
+      "@@@STEP_LOG_LINE@request@          \"repository\": \"flutter\"@@@",
+      "@@@STEP_LOG_LINE@request@        },@@@",
+      "@@@STEP_LOG_LINE@request@        \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-00000000133a\",@@@",
+      "@@@STEP_LOG_LINE@request@        \"swarming\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"parentRunId\": \"fake-task-id\"@@@",
+      "@@@STEP_LOG_LINE@request@        },@@@",
+      "@@@STEP_LOG_LINE@request@        \"tags\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"cq_experimental\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"false\"@@@",
+      "@@@STEP_LOG_LINE@request@          },@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"parent_buildbucket_id\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"8945511751514863184\"@@@",
+      "@@@STEP_LOG_LINE@request@          },@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"user_agent\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"recipe\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ]@@@",
+      "@@@STEP_LOG_LINE@request@      }@@@",
+      "@@@STEP_LOG_LINE@request@    }@@@",
+      "@@@STEP_LOG_LINE@request@  ]@@@",
+      "@@@STEP_LOG_LINE@request@}@@@",
+      "@@@STEP_LOG_END@request@@@",
+      "@@@STEP_LINK@8922054662172514001@https://cr-buildbucket.appspot.com/build/8922054662172514001@@@"
+    ]
+  },
+  {
+    "cmd": [],
     "name": "engine.collect builds",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
@@ -542,7 +683,8 @@
       "cr-buildbucket.appspot.com",
       "-interval",
       "20s",
-      "8945511751514863186"
+      "8945511751514863186",
+      "8922054662172514001"
     ],
     "infra_step": true,
     "luci_context": {
@@ -584,7 +726,7 @@
       }
     },
     "name": "engine.collect builds.collect.get",
-    "stdin": "{\"requests\": [{\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"id\": \"8945511751514863186\"}}]}",
+    "stdin": "{\"requests\": [{\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"id\": \"8945511751514863186\"}}, {\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"id\": \"8922054662172514001\"}}]}",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@3@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -648,6 +790,12 @@
       "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\",@@@",
       "@@@STEP_LOG_LINE@request@        \"id\": \"8945511751514863186\"@@@",
       "@@@STEP_LOG_LINE@request@      }@@@",
+      "@@@STEP_LOG_LINE@request@    },@@@",
+      "@@@STEP_LOG_LINE@request@    {@@@",
+      "@@@STEP_LOG_LINE@request@      \"getBuild\": {@@@",
+      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\",@@@",
+      "@@@STEP_LOG_LINE@request@        \"id\": \"8922054662172514001\"@@@",
+      "@@@STEP_LOG_LINE@request@      }@@@",
       "@@@STEP_LOG_LINE@request@    }@@@",
       "@@@STEP_LOG_LINE@request@  ]@@@",
       "@@@STEP_LOG_LINE@request@}@@@",
diff --git a/recipes/release/release_builder.expected/filter_targets_not_on_current_platform.json b/recipes/release/release_builder.expected/filter_targets_not_on_current_platform.json
index d4cfc11..1bb1960 100644
--- a/recipes/release/release_builder.expected/filter_targets_not_on_current_platform.json
+++ b/recipes/release/release_builder.expected/filter_targets_not_on_current_platform.json
@@ -342,35 +342,7 @@
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@2@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
-      "@@@STEP_LOG_LINE@json.output@  \"targets\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@    {@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"drone_dimensions\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"os=Linux\"@@@",
-      "@@@STEP_LOG_LINE@json.output@      ],@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"enabled_branches\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"flutter-3.2-candidate.5\"@@@",
-      "@@@STEP_LOG_LINE@json.output@      ],@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"name\": \"Linux flutter_test\",@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"release_build\": \"true\"@@@",
-      "@@@STEP_LOG_LINE@json.output@      },@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"recipe\": \"release/something\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    },@@@",
-      "@@@STEP_LOG_LINE@json.output@    {@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"drone_dimensions\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"os=Mac\"@@@",
-      "@@@STEP_LOG_LINE@json.output@      ],@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"enabled_branches\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"flutter-3.2-candidate.5\"@@@",
-      "@@@STEP_LOG_LINE@json.output@      ],@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"name\": \"Mac flutter_test\",@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"$flutter/osx_sdk\": \"{\\\"sdk_version\\\": \\\"14a5294e\\\"}\",@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"release_build\": \"true\"@@@",
-      "@@@STEP_LOG_LINE@json.output@      },@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"recipe\": \"release/something\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    }@@@",
-      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"targets\": []@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
@@ -529,7 +501,7 @@
       }
     },
     "name": "framework.launch builds.schedule",
-    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/flutter-3.2-candidate.5\"}, \"executionTimeout\": \"14400s\", \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/beta\"}, \"priority\": 30, \"properties\": {\"build\": {\"drone_dimensions\": [\"os=Linux\"], \"enabled_branches\": [\"beta\"], \"name\": \"Linux is_current_platform\", \"properties\": {\"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"scheduler\": \"release\"}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
+    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/main\"}, \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/beta\"}, \"priority\": 30, \"properties\": {\"build\": {\"drone_dimensions\": [\"os=Linux\"], \"enabled_branches\": [\"beta\"], \"name\": \"Linux is_current_platform\", \"properties\": {\"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"scheduler\": \"release\"}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@2@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -563,9 +535,8 @@
       "@@@STEP_LOG_LINE@request@          }@@@",
       "@@@STEP_LOG_LINE@request@        ],@@@",
       "@@@STEP_LOG_LINE@request@        \"exe\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"cipdVersion\": \"refs/heads/flutter-3.2-candidate.5\"@@@",
+      "@@@STEP_LOG_LINE@request@          \"cipdVersion\": \"refs/heads/main\"@@@",
       "@@@STEP_LOG_LINE@request@        },@@@",
-      "@@@STEP_LOG_LINE@request@        \"executionTimeout\": \"14400s\",@@@",
       "@@@STEP_LOG_LINE@request@        \"experimental\": \"NO\",@@@",
       "@@@STEP_LOG_LINE@request@        \"experiments\": {@@@",
       "@@@STEP_LOG_LINE@request@          \"luci.buildbucket.parent_tracking\": false@@@",
diff --git a/recipes/release/release_builder.expected/linux_schedule_during_release_override_with_empty_enabled_branch.json b/recipes/release/release_builder.expected/linux_schedule_during_release_override.json
similarity index 100%
rename from recipes/release/release_builder.expected/linux_schedule_during_release_override_with_empty_enabled_branch.json
rename to recipes/release/release_builder.expected/linux_schedule_during_release_override.json
diff --git a/recipes/release/release_builder.expected/linux_schedule_during_release_override_with_matching_enabled_branch.json b/recipes/release/release_builder.expected/linux_scheduler_release.json
similarity index 97%
rename from recipes/release/release_builder.expected/linux_schedule_during_release_override_with_matching_enabled_branch.json
rename to recipes/release/release_builder.expected/linux_scheduler_release.json
index 5e76c5f..fab533a 100644
--- a/recipes/release/release_builder.expected/linux_schedule_during_release_override_with_matching_enabled_branch.json
+++ b/recipes/release/release_builder.expected/linux_scheduler_release.json
@@ -864,9 +864,9 @@
       "@@@STEP_LOG_LINE@json.output@      \"drone_dimensions\": [@@@",
       "@@@STEP_LOG_LINE@json.output@        \"os=Linux\"@@@",
       "@@@STEP_LOG_LINE@json.output@      ],@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"name\": \"Linux schedule_during_release_override\",@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"name\": \"Linux scheduler_release\",@@@",
       "@@@STEP_LOG_LINE@json.output@      \"recipe\": \"release/something\",@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"schedule_during_release_override\": true@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"scheduler\": \"release\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  ]@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
@@ -909,7 +909,7 @@
       }
     },
     "name": "framework.launch builds.schedule",
-    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/flutter-3.2-candidate.5\"}, \"executionTimeout\": \"14400s\", \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/flutter-3.2-candidate.5\"}, \"priority\": 30, \"properties\": {\"build\": {\"drone_dimensions\": [\"os=Linux\"], \"name\": \"Linux schedule_during_release_override\", \"properties\": {\"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"schedule_during_release_override\": true}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-00000000133d\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
+    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/flutter-3.2-candidate.5\"}, \"executionTimeout\": \"14400s\", \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/flutter-3.2-candidate.5\"}, \"priority\": 30, \"properties\": {\"build\": {\"drone_dimensions\": [\"os=Linux\"], \"name\": \"Linux scheduler_release\", \"properties\": {\"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"scheduler\": \"release\"}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-00000000133d\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@2@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -971,12 +971,12 @@
       "@@@STEP_LOG_LINE@request@            \"drone_dimensions\": [@@@",
       "@@@STEP_LOG_LINE@request@              \"os=Linux\"@@@",
       "@@@STEP_LOG_LINE@request@            ],@@@",
-      "@@@STEP_LOG_LINE@request@            \"name\": \"Linux schedule_during_release_override\",@@@",
+      "@@@STEP_LOG_LINE@request@            \"name\": \"Linux scheduler_release\",@@@",
       "@@@STEP_LOG_LINE@request@            \"properties\": {@@@",
       "@@@STEP_LOG_LINE@request@              \"is_fusion\": \"true\"@@@",
       "@@@STEP_LOG_LINE@request@            },@@@",
       "@@@STEP_LOG_LINE@request@            \"recipe\": \"release/something\",@@@",
-      "@@@STEP_LOG_LINE@request@            \"schedule_during_release_override\": true@@@",
+      "@@@STEP_LOG_LINE@request@            \"scheduler\": \"release\"@@@",
       "@@@STEP_LOG_LINE@request@          },@@@",
       "@@@STEP_LOG_LINE@request@          \"build_identifier\": \"8945511751514863184\",@@@",
       "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\",@@@",
@@ -1156,7 +1156,7 @@
   },
   {
     "cmd": [],
-    "name": "framework.display builds.Linux schedule_during_release_override",
+    "name": "framework.display builds.Linux scheduler_release",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@2@@@",
       "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
diff --git a/recipes/release/release_builder.expected/retry_override_still_runs_non_config_name_target.json b/recipes/release/release_builder.expected/retry_override_still_runs_non_config_name_target.json
index 7035ecb..99c4fd2 100644
--- a/recipes/release/release_builder.expected/retry_override_still_runs_non_config_name_target.json
+++ b/recipes/release/release_builder.expected/retry_override_still_runs_non_config_name_target.json
@@ -448,7 +448,7 @@
       "@@@STEP_LOG_LINE@json.output@      ],@@@",
       "@@@STEP_LOG_LINE@json.output@      \"name\": \"Linux only_enabled_for_release_candidates\",@@@",
       "@@@STEP_LOG_LINE@json.output@      \"recipe\": \"release/something\",@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"schedule_during_release_override\": true@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"scheduler\": \"release\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  ]@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
@@ -491,7 +491,7 @@
       }
     },
     "name": "framework.launch builds.schedule",
-    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/flutter-3.2-candidate.5\"}, \"executionTimeout\": \"14400s\", \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/flutter-3.2-candidate.5\"}, \"priority\": 30, \"properties\": {\"build\": {\"drone_dimensions\": [\"os=Linux\"], \"enabled_branches\": [\"flutter-\\\\d+\\\\.\\\\d+-candidate\\\\.\\\\d+\"], \"name\": \"Linux only_enabled_for_release_candidates\", \"properties\": {\"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"schedule_during_release_override\": true}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\", \"retry_override_list\": \"foo\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
+    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"prod\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/flutter-3.2-candidate.5\"}, \"executionTimeout\": \"14400s\", \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/flutter\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/flutter\", \"ref\": \"refs/heads/flutter-3.2-candidate.5\"}, \"priority\": 30, \"properties\": {\"build\": {\"drone_dimensions\": [\"os=Linux\"], \"enabled_branches\": [\"flutter-\\\\d+\\\\.\\\\d+-candidate\\\\.\\\\d+\"], \"name\": \"Linux only_enabled_for_release_candidates\", \"properties\": {\"is_fusion\": \"true\"}, \"recipe\": \"release/something\", \"scheduler\": \"release\"}, \"build_identifier\": \"8945511751514863184\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"is_fusion\": \"true\", \"parent_commit\": \"\", \"recipe\": \"release/something\", \"repository\": \"flutter\", \"retry_override_list\": \"foo\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@2@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -561,7 +561,7 @@
       "@@@STEP_LOG_LINE@request@              \"is_fusion\": \"true\"@@@",
       "@@@STEP_LOG_LINE@request@            },@@@",
       "@@@STEP_LOG_LINE@request@            \"recipe\": \"release/something\",@@@",
-      "@@@STEP_LOG_LINE@request@            \"schedule_during_release_override\": true@@@",
+      "@@@STEP_LOG_LINE@request@            \"scheduler\": \"release\"@@@",
       "@@@STEP_LOG_LINE@request@          },@@@",
       "@@@STEP_LOG_LINE@request@          \"build_identifier\": \"8945511751514863184\",@@@",
       "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\",@@@",
diff --git a/recipes/release/release_builder.py b/recipes/release/release_builder.py
index 31ebff9..e59c366 100644
--- a/recipes/release/release_builder.py
+++ b/recipes/release/release_builder.py
@@ -35,7 +35,7 @@
 #       release_build: "true"
 # ##############################################################################
 #
-# For the framework, each target that is marked "scheduler: release" or "schedule_during_release_override: true"
+# For the framework, each target that is marked "scheduler: release"
 # ##############################################################################
 # # CONTENTS of //.ci.yaml
 # ##############################################################################
@@ -46,7 +46,6 @@
 #   # SCHEDULED.
 #   - name: Linux docs_publish
 #     recipe: flutter/docs
-#     schedule_during_release_override: true
 # ##############################################################################
 #
 # Note that "enabled_branches" still applies.
@@ -97,16 +96,20 @@
     #     release_build: "true"
     # or any build that is marked:
     # - Linux framework_foo:
-    #   schedule_during_release_override: true
+    #   scheduler: release
     #
     # Should be built during the Linux flutter_release_build orchestrator.
     if target.get('properties', {}).get('release_build', '') == 'true':
       return True
+    # TODO(matanlurey): Remove as part of https://github.com/flutter/flutter/issues/168913.
     if target.get('schedule_during_release_override'):
       return True
+    if target.get('scheduler') == 'release':
+      return True
     return False
 
   assert (is_release_channel)
+
   # A framework build that is marked:
   # - Linux framework_foo
   #   scheduler: release
@@ -115,16 +118,6 @@
   if target.get('scheduler') != 'release':
     return False
 
-  # Ensure that this target is enabled for this release channel.
-  # TODO(matanlurey): Once "scheduler: release" opt-out is removed and replaced
-  # with "enabled_branches: ["flutter-\d+\.\d+-candidate\.\d+"]", then we remove
-  # this second enabled_branches test and just rely on the initial one.
-  #
-  # See https://github.com/flutter/flutter/issues/168745.
-  git_ref_branch = git_ref.replace('refs/heads/', '')
-  if not git_ref_branch in target.get('enabled_branches', []):
-    return False
-
   # Skip targets that can't run on the current platform.
   for_this_platform = target['name'].lower().startswith(api.platform.name)
   if not for_this_platform:
@@ -137,7 +130,6 @@
     api,
     git_ref,
     target,
-    release_branch,
     retry_override_list,
     top_level_enabled_targets,
 ):
@@ -150,18 +142,16 @@
     return False
 
   # Enabled for current branch
-  enabled_branches = target.get('enabled_branches', top_level_enabled_targets)
-
-  # TODO(matanlurey): Add "flutter-\d+\.\d+-candidate\.\d+" to enabled_branches
-  # and remove "scheduler != release". As far as I can tell, this was a hack put
-  # in to work around https://github.com/flutter/flutter/issues/128459 and is
-  # not necessary otherwise.
   #
-  # See https://github.com/flutter/flutter/issues/168745.
-  if enabled_branches and target.get('scheduler') != 'release':
+  # Note this is different than "release_branch" (elsewhere), where we want to
+  # "which commit does this branch originate in", and here we just want to know
+  # "should something run on the current branch?"
+  current_branch = git_ref.split('/')[-1]
+  enabled_branches = target.get('enabled_branches', top_level_enabled_targets)
+  if enabled_branches:
     for r in enabled_branches:
       # Enabled branches is a list of regex
-      if re.match(r, release_branch):
+      if re.match(r, current_branch):
         break
     else:
       # Current branch didn't match any of the enabled branches.
@@ -209,7 +199,6 @@
           api,
           git_ref,
           target,
-          release_branch,
           retry_override_list,
           top_level_enabled_targets,
       ):
@@ -666,7 +655,7 @@
                   'recipe': 'release/something',
                   'enabled_branches': ['flutter-\d+\.\d+-candidate\.\d+'],
                   'drone_dimensions': ['os=Linux'],
-                  'schedule_during_release_override': True,
+                  'scheduler': 'release',
               },]
           })
       ),
@@ -755,7 +744,9 @@
       ),
       api.step_data(
           'engine.read ci yaml.parse',
-          api.json.output(release_multiplatform_tasks)
+          api.json.output({
+            'targets': [],
+          })
       ),
       api.step_data(
           'framework.read ci yaml.parse',
@@ -781,12 +772,12 @@
       api.step_data(
           'Identify branches.git branch',
           stdout=api.raw_io.output_text(
-              'remotes/origin/branch1\nremotes/origin/branch2\nremotes/origin/flutter-3.2-candidate.5'
+              'remotes/origin/beta'
           )
       ),
   )
   yield api.test(
-      'linux_schedule_during_release_override_with_empty_enabled_branch',
+      'linux_schedule_during_release_override',
       api.properties(
           environment='Staging',
           repository='flutter',
@@ -831,7 +822,7 @@
       ),
   )
   yield api.test(
-      'linux_schedule_during_release_override_with_matching_enabled_branch',
+      'linux_scheduler_release',
       api.properties(
           environment='Staging',
           repository='flutter',
@@ -856,10 +847,10 @@
           'framework.read ci yaml.parse',
           api.json.output({
               'targets': [{
-                  'name': 'Linux schedule_during_release_override',
+                  'name': 'Linux scheduler_release',
                   'recipe': 'release/something',
                   'drone_dimensions': ['os=Linux'],
-                  'schedule_during_release_override': True,
+                  'scheduler': 'release',
               },]
           })
       ),