Roll Dart SDK from 1aef027ec953 to 63a452b45026 (2 revisions) (#49311)

https://dart.googlesource.com/sdk.git/+log/1aef027ec953..63a452b45026

2023-12-21 [email protected] Version 3.3.0-250.0.dev
2023-12-20 [email protected] Version 3.3.0-249.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter Engine: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Author: skia-flutter-autoroll

DEPS

@@ -66,7 +66,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '1aef027ec9531994d7b790392804a41c51150db2',
+  'dart_revision': '63a452b45026d513a4d4783c88530528c7d3e8ed',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -76,7 +76,7 @@ vars = {
   'dart_browser_launcher_rev': 'c68ec25e36187b050ac918d2b614f2d6320f0045',
   'dart_clock_rev': 'f975668839f45bad561d6227f88297bbbcff03fa',
   'dart_collection_rev': '2d57a82ad079fe2d127f5a9b188170de2f5cdedc',
-  'dart_devtools_rev': 'c7aa1df42178b054901c36bb1b8ea25b5542be8c',
+  'dart_devtools_rev': '071405a237dab931ea10be728ec188aa2d55111f',
   'dart_libprotobuf_rev': '24487dd1045c7f3d64a21f38a3f0c06cc4cf2edb',
   'dart_perfetto_rev': '13ce0c9e13b0940d2476cd0cff2301708a9a2e2b',
   'dart_protobuf_gn_rev': 'ca669f79945418f6229e4fef89b666b2a88cbb10',
@@ -333,7 +333,7 @@ deps = {
    Var('chromium_git') + '/external/github.com/WebAssembly/binaryen.git@a51bd6df919a5b79574f0996a760cc20cb05697e',
 
   'src/third_party/dart/third_party/devtools':
-   {'dep_type': 'cipd', 'packages': [{'package': 'dart/third_party/flutter/devtools', 'version': 'git_revision:c7aa1df42178b054901c36bb1b8ea25b5542be8c'}]},
+   {'dep_type': 'cipd', 'packages': [{'package': 'dart/third_party/flutter/devtools', 'version': 'git_revision:071405a237dab931ea10be728ec188aa2d55111f'}]},
 
   'src/third_party/dart/third_party/pkg/args':
    Var('dart_git') + '/args.git@46d5033377d277d70bc6ec68504730b9384b1db1',