Roll src/third_party/dart 642f8d052fd7..7113fc79a83c (3 commits) (#14578

)

https://dart.googlesource.com/sdk.git/+log/642f8d052fd7..7113fc79a83c

git log 642f8d052fd7..7113fc79a83c --date=short --first-parent --format='%ad %ae %s'
2019-12-19 sjindel@google.com [vm/aot/tfa] Use static type of calls against generic methods in TFA.
2019-12-19 sortie@google.com [benchmark] Switch dart2js and dartdevc targets to linux-x64.
2019-12-19 johnniwinther@google.com [cfe] Add tests for late extension fields

Created with:
  gclient setdep -r src/third_party/dart@7113fc79a83c

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 dart-vm-team@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

Bug: None
Tbr: dart-vm-team@google.com

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': '642f8d052fd7fda51651b38bb77f59713de74ac3',
+  'dart_revision': '7113fc79a83c7bff1f102741ac4bb209480e5be2',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py