Roll src/third_party/dart 7f146e431e..97f91fecdb (22 commits)

dart-lang/sdk@97f91fecdb [vm] Mark Profiler_StringInterpolation Fail in vm.status
dart-lang/sdk@c167374232 Add Never*, use it in type provider etc
dart-lang/sdk@97dc7f4482 Support constructor declarations (issue 37196)
dart-lang/sdk@ed9d185a9e Top-level getters do not have parameters
dart-lang/sdk@5ca5a53f64 Migration: Add support for generic function types.
dart-lang/sdk@c2696591a6 Migration: Add more support for dynamic, clean up handling of void.
dart-lang/sdk@8b17b2e143 Migration: add support for null-aware accesses.
dart-lang/sdk@2b76cdf1d7 [ VM ] Remove bad status file entries for data_uri_import_test/utf16
dart-lang/sdk@881a2e9e48 Migration: remove unnecessary constructor argument
dart-lang/sdk@eba533dcd1 Migration: Clean up handling of LUB and substitution nodes.
dart-lang/sdk@c41e9ae0e8 Fix wording in spec
dart-lang/sdk@0a0927de9c Migration: Separate the implementation from the NNBD migration engine's public API.
dart-lang/sdk@b3b9aacc5f [dartdevc] enable testing on ff/safari/edge
dart-lang/sdk@575a6424c3 Migration: Remove transitional API
dart-lang/sdk@e23b00745f Migration: Move classes out of transitional_api.dart
dart-lang/sdk@47865b7643 Migration: remove unused field Variables._graph.
dart-lang/sdk@4270982dd1 TypeSystem tests code motion.
dart-lang/sdk@0629ce94cc Change location where we set AnalysisDriver.useSummary2 in build mode.
dart-lang/sdk@f94628fb1b Convert the remaining diagnostics tests to test for location
dart-lang/sdk@e4196ce8c6 [vm] Namespace constants like offsets and sizeofs to use runtime_api.h
dart-lang/sdk@51046368c5 Move NNBD migration tool to a fresh package.
dart-lang/sdk@6c358d3ba6 Permissive mode reports the exceptions that were thrown and ignored

DEPS

@@ -31,7 +31,7 @@ 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': '7f146e431e160e51d030a633d09bc692574ce15f',
+  'dart_revision': '97f91fecdbf009bb4c9b43736a74339404d9f504',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: 986c380f4ba31a2a9922511b06588c3a
+Signature: ce47a8b43f46af2f5aa8dd6a6d05c1dd
 
 UNUSED LICENSES: