Roll Dart SDK from b8f4018 to 86c7493 (16 revisions) (flutter#25999)

Author: skia-flutter-autoroll

DEPS

@@ -35,7 +35,7 @@ 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': 'b8f4018535fa792891e2add3a475f35e3ec156ab',
+  'dart_revision': '86c749398b3ace9707030dbda522e2d02aa90d34',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -166,7 +166,7 @@ deps = {
    Var('dart_git') + '/charcode.git@bcd8a12c315b7a83390e4865ad847ecd9344cba2',
 
   'src/third_party/dart/third_party/pkg/cli_util':
-   Var('dart_git') + '/cli_util.git@fd1b716e8a350a454e01ae56df540293d31ff6c8',
+   Var('dart_git') + '/cli_util.git@8a73cd7eca373ff71d290ccf47d4829e5ca44209',
 
   'src/third_party/dart/third_party/pkg/clock':
    Var('dart_git') + '/clock.git' + '@' + Var('dart_clock_rev'),
@@ -223,7 +223,7 @@ deps = {
    Var('dart_git') + '/intl.git' + '@' + Var('dart_intl_tag'),
 
   'src/third_party/dart/third_party/pkg/json_rpc_2':
-   Var('dart_git') + '/json_rpc_2.git@5ec32a2e0e99dedcef5b3237f93167cd22c2da50',
+   Var('dart_git') + '/json_rpc_2.git@7e00f893440a72de0637970325e4ea44bd1e8c8e',
 
   'src/third_party/dart/third_party/pkg/linter':
    Var('dart_git') + '/linter.git' + '@' + Var('dart_linter_tag'),
@@ -334,7 +334,7 @@ deps = {
    Var('dart_git') + '/package_config.git@a84c0d45401f215fbe9384df923a38f4022a3c45',
 
   'src/third_party/dart/tools/sdks':
-   {'packages': [{'version': 'version:2.12.0', 'package': 'dart/dart-sdk/${{platform}}'}], 'dep_type': 'cipd'},
+   {'packages': [{'version': 'version:2.13.0-211.14.beta', 'package': 'dart/dart-sdk/${{platform}}'}], 'dep_type': 'cipd'},
 
   # WARNING: end of dart dependencies list that is cleaned up automatically - see create_updated_flutter_deps.py.
 

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 0cd97bc3f34ac40583de63d2f282fdba
+Signature: dc3d2868e7a8929e8551f9264d01acd7
 
 UNUSED LICENSES: