Update Maven URL to https (#52042)

diff --git a/packages/flutter_tools/gradle/aar_init_script.gradle b/packages/flutter_tools/gradle/aar_init_script.gradle
index 467d67d..030d9b2 100644
--- a/packages/flutter_tools/gradle/aar_init_script.gradle
+++ b/packages/flutter_tools/gradle/aar_init_script.gradle
@@ -57,7 +57,7 @@
     // as a result, add the dependency on the embedding.
     project.repositories {
         maven {
-            url "http://download.flutter.io"
+            url "https://storage.googleapis.com/download.flutter.io"
         }
     }
     String engineVersion = Paths.get(getFlutterRoot(project), "bin", "internal", "engine.version")
diff --git a/packages/flutter_tools/gradle/flutter.gradle b/packages/flutter_tools/gradle/flutter.gradle
index 7a3c8ed..a22b2be 100644
--- a/packages/flutter_tools/gradle/flutter.gradle
+++ b/packages/flutter_tools/gradle/flutter.gradle
@@ -41,7 +41,7 @@
 apply plugin: FlutterPlugin
 
 class FlutterPlugin implements Plugin<Project> {
-    private static final String MAVEN_REPO      = "http://download.flutter.io";
+    private static final String MAVEN_REPO      = "https://storage.googleapis.com/download.flutter.io";
 
     // The platforms that can be passed to the `--Ptarget-platform` flag.
     private static final String PLATFORM_ARM32  = "android-arm";
diff --git a/packages/flutter_tools/gradle/resolve_dependencies.gradle b/packages/flutter_tools/gradle/resolve_dependencies.gradle
index 52478cd..3ee4ab2 100644
--- a/packages/flutter_tools/gradle/resolve_dependencies.gradle
+++ b/packages/flutter_tools/gradle/resolve_dependencies.gradle
@@ -18,7 +18,7 @@
     google()
     jcenter()
     maven {
-        url "http://download.flutter.io"
+        url "https://storage.googleapis.com/download.flutter.io"
     }
 }
 
diff --git a/packages/flutter_tools/lib/src/android/gradle.dart b/packages/flutter_tools/lib/src/android/gradle.dart
index 5482665..3096b63 100644
--- a/packages/flutter_tools/lib/src/android/gradle.dart
+++ b/packages/flutter_tools/lib/src/android/gradle.dart
@@ -637,7 +637,7 @@
             url '${repoDirectory.path}'
         }
         maven {
-            url 'http://download.flutter.io'
+            url 'https://storage.googleapis.com/download.flutter.io'
         }
       }
 
diff --git a/packages/flutter_tools/test/general.shard/android/gradle_test.dart b/packages/flutter_tools/test/general.shard/android/gradle_test.dart
index e13c1b0..c7f7872 100644
--- a/packages/flutter_tools/test/general.shard/android/gradle_test.dart
+++ b/packages/flutter_tools/test/general.shard/android/gradle_test.dart
@@ -2446,7 +2446,7 @@
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'
@@ -2498,7 +2498,7 @@
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'
@@ -2537,7 +2537,7 @@
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'
@@ -2577,7 +2577,7 @@
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'