Roll Dart SDK from f9e1d1ab4001 to 2607b01bec99 (2 revisions) (#23946)

DEPS

diff --git a/DEPS b/DEPS
index ec76f5f..10ba1d2 100644
--- a/DEPS
+++ b/DEPS
@@ -35,7 +35,7 @@
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'f9e1d1ab40015ad8ec7132b4b476bb2c39ed0757',
+  'dart_revision': '2607b01bec99f324e45b00fde76591f244f65a4e',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -206,7 +206,7 @@
    Var('dart_git') + '/glob.git@7c0ef8d4fa086f6b185c4dd724b700e7d7ad8f79',
 
   'src/third_party/dart/third_party/pkg/html':
-   Var('dart_git') + '/html.git@137be8db5d5b7f00530fca1591292849ce6779c9',
+   Var('dart_git') + '/html.git@7f31979303f916f2aabb9e2091950798abdd9ca1',
 
   'src/third_party/dart/third_party/pkg/http':
    Var('dart_git') + '/http.git@3845753a54624b070828cb3eff7a6c2a4e046cfb',

ci/licenses_golden/licenses_third_party

diff --git a/ci/licenses_golden/licenses_third_party b/ci/licenses_golden/licenses_third_party
index 883d276..8456a8f 100644
--- a/ci/licenses_golden/licenses_third_party
+++ b/ci/licenses_golden/licenses_third_party
@@ -1,4 +1,4 @@
-Signature: 21636d7d2a92725d05cd465ff4a3347b
+Signature: 8d4521c3fe82b7be926a7af5f8b15557
 
 UNUSED LICENSES: