Roll src/third_party/dart 70a7ef3f58..50f7ae9c5d (18 commits)

dart-lang/sdk@50f7ae9c5d [VM] - Add missing extension member flag for static initializer functions.
dart-lang/sdk@8fd83cb222 [ dart:developer ] Remove optional 'parent' parameter from TimelineTask.withTaskId to avoid ID collisions
dart-lang/sdk@aab88791b8 Change experiment flag name in test runner and test config.
dart-lang/sdk@4a2adf5734 Allow an unspecified error expectation to match multiple errors.
dart-lang/sdk@fa3f88efe9 Fix AOT build breakage (new extension method names were failing as demangling is not done in AOT builds).
dart-lang/sdk@15fe929bbb Don't use LocalElementBuilder in top-level inference.
dart-lang/sdk@c891fa858e Update dartdoc to v0.28.8.
dart-lang/sdk@a551c507bd [VM] Implement name demangling of extension methods.
dart-lang/sdk@017a7a6221 Revert "[vm/compiler] Further compress the information previously in StackMaps."
dart-lang/sdk@127b582a2f Update instantiateElementTypeToBounds() to use precomputed default types for type parameters.
dart-lang/sdk@f2dd0465dc Migration: share code for figuring out when an access is null-aware
dart-lang/sdk@cf7e48bec7 Migration: Handle members of Object properly in FixBuilder.
dart-lang/sdk@7bdbbc4ec4 Fix "unused variable" warning
dart-lang/sdk@878458d7b5 Migration: Add FixBuilder support for property accesses and prefixed identifiers.
dart-lang/sdk@c9c8e4d84f Resolver fix: set auxiliaryElements properly for property accesses.
dart-lang/sdk@b74c9f073b Don't use '.type' in EdgeBuilder.
dart-lang/sdk@10ad0c3830 Don't use '.type' in FindElement.
dart-lang/sdk@af671211ab Add more ffi related checks

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': '70a7ef3f589ec525c2a3b14fa7d47f44d09a29f3',
+  'dart_revision': '50f7ae9c5d3f8c4ec864d5e8739a42fd102c93f3',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -230,7 +230,7 @@ deps = {
    Var('dart_git') + '/dart2js_info.git' + '@' + Var('dart_dart2js_info_tag'),
 
   'src/third_party/dart/third_party/pkg/dartdoc':
-   Var('dart_git') + '/dartdoc.git@v0.28.7',
+   Var('dart_git') + '/dartdoc.git@v0.28.8',
 
   'src/third_party/dart/third_party/pkg/fixnum':
    Var('dart_git') + '/fixnum.git' + '@' + Var('dart_fixnum_tag'),

ci/licenses_golden/licenses_third_party

-Signature: d965dcf1e12e5361e63390dd56722d3e
+Signature: 14461529c6798fb59557bbc431f61740
 
 UNUSED LICENSES: