Roll src/third_party/dart 327bc451f8..403c4af720 (9 commits)

dart-lang/sdk@403c4af720 Update dart_style to 1.3.1.
dart-lang/sdk@4a69ac1344 [vm, bytecode] Generate bytecode per package in fronend_server incremental compiles.
dart-lang/sdk@48f7636798 [ package:vm_service ] Added `HeapSnapshotGraph`, a helper class which parses the responses from the `HeapSnapshot` event stream.
dart-lang/sdk@7263b9aa9d [vm/fuzzer] rename dartfuzz_ffiapi
dart-lang/sdk@402951b399 Stop using 'Element.type' in ErrorVerifier.
dart-lang/sdk@1707aff921 [dart2js] Mark pkg/modular_test/test/validate_{pipeline,suite}_test as slow.
dart-lang/sdk@f0e5b380ab [build] Fix the depfile for gen_kernel_bytecode_dill
dart-lang/sdk@e6eafe20f7 Fix strict inference on overriding methods and setters.
dart-lang/sdk@5b33baded9 Migration: fix trial_migration.dart's handling of `required`

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': '327bc451f8397f393808454ff65ee09bc2cb18ed',
+  'dart_revision': '403c4af7205386980c23e169448122e3735b8e2d',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -51,7 +51,7 @@ vars = {
   'dart_crypto_tag': '2.0.6',
   'dart_csslib_tag': '0.15.0',
   'dart_dart2js_info_tag': '0.6.0',
-  'dart_dart_style_tag': '1.3.0',
+  'dart_dart_style_tag': '1.3.1',
   'dart_fixnum_tag': '0.10.9',
   'dart_glob_tag': '1.1.7',
   'dart_html_tag': '0.14.0+1',

ci/licenses_golden/licenses_third_party

-Signature: d920708b7014221342642984463a42b6
+Signature: e6bf9a29624ecb044683bbb93387e212
 
 UNUSED LICENSES:
 
@@ -7467,7 +7467,7 @@ FILE: ../../../third_party/dart/runtime/observatory/lib/src/elements/tree_map.da
 FILE: ../../../third_party/dart/runtime/observatory/lib/src/repositories/timeline_base.dart
 FILE: ../../../third_party/dart/runtime/platform/elf.h
 FILE: ../../../third_party/dart/runtime/tools/dartfuzz/dartfuzz_api_table.dart
-FILE: ../../../third_party/dart/runtime/tools/dartfuzz/dartfuzz_ffiapi.dart
+FILE: ../../../third_party/dart/runtime/tools/dartfuzz/dartfuzz_ffi_api.dart
 FILE: ../../../third_party/dart/runtime/tools/dartfuzz/gen_api_table.dart
 FILE: ../../../third_party/dart/runtime/tools/graphexplorer/graphexplorer.html
 FILE: ../../../third_party/dart/runtime/tools/graphexplorer/graphexplorer.js