Roll src/third_party/dart d5fa596d74..134e0e28cd (9 commits) (#14006)

dart-lang/sdk@134e0e28cd [dartdevc] Break dart:_debugger dependency on dart:html
dart-lang/sdk@629d4ce095 [vm] Test for late fields with complicated initializers
dart-lang/sdk@7ceceda72c Fix typo in snapshot_profiling.md. heapsnaphsot -> heapsnapshot
dart-lang/sdk@d45438e793 Add support for selecting text in completion snippets
dart-lang/sdk@18f23124ad [cfe] Print nullability on types in messages for opt-in libraries.
dart-lang/sdk@e84af9b761 [cfe] Disallow annotations on type parameters of function types
dart-lang/sdk@2b56db6e5d [dart2js,ddc] Enable late lowering in dart2js and ddc
dart-lang/sdk@cb6ab6eaa2 [cfe] Handle untyped initializing formals for late fields
dart-lang/sdk@4d884229ab [kernel] Add (internal) relink method

DEPS

@@ -34,7 +34,7 @@ vars = {
   # 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': 'd5fa596d748d31512a91ce07b73a7c8cc61bd098',
+  'dart_revision': '134e0e28cda1f8110a69bad34ae70e8123475a80',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_third_party

-Signature: 5ccba447cd6246f10cd3a3b519d0ef7d
+Signature: 7f0643ee25a0003b77d518e3bfb5e4df
 
 UNUSED LICENSES: