Roll Dart SDK from a3d902d to 9f907e1 (2 revisions) (#22058)

https://dart.googlesource.com/sdk.git/+log/a3d902d8598e..9f907e198970

2020-10-22 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.11.0-244.0.dev
2020-10-21 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.11.0-243.0.dev

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/+doc/master/autoroll/README.md

Author: skia-flutter-autoroll

DEPS

@@ -34,22 +34,22 @@ 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': 'a3d902d8598eabf68db42c6f7911fb7fb63f7012',
+  'dart_revision': '9f907e198970a05047bc68736744487ba59a2378',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
   'dart_args_tag': '1.6.0',
   'dart_boringssl_gen_rev': '429ccb1877f7987a6f3988228bc2440e61293499',
   'dart_boringssl_rev': '4dfd5af70191b068aebe567b8e29ce108cee85ce',
   'dart_collection_rev': '7d44763d62f97698b15c08ee360d838dccb63c88',
-  'dart_dart_style_tag': '1.3.7',
+  'dart_dart_style_tag': '1.3.8',
   'dart_http_retry_tag': '0.1.1',
   'dart_http_throttle_tag': '1.0.2',
   'dart_intl_tag': '0.16.1',
   'dart_linter_tag': '0.1.121',
   'dart_oauth2_tag': '1.6.0',
   'dart_protobuf_rev': '3746c8fd3f2b0147623a8e3db89c3ff4330de760',
-  'dart_pub_rev': 'f0c7771b38155d3829a60d60b5dba2784b100811',
+  'dart_pub_rev': '5b4df5a6f931c63622ac349602d6ef0367e8070f',
   'dart_pub_semver_tag': 'v1.4.4',
   'dart_quiver-dart_tag': '246e754fe45cecb6aa5f3f13b4ed61037ff0d784',
   'dart_resource_rev': '6b79867d0becf5395e5819a75720963b8298e9a7',
@@ -61,12 +61,12 @@ vars = {
   'dart_sse_tag': 'e5cf68975e8e87171a3dc297577aa073454a91dc',
   'dart_stack_trace_tag': '45319bfd2a6da228d8c32b06e1da02ad199373c7',
   'dart_stagehand_tag': 'v3.3.9',
-  'dart_stream_channel_tag': 'c446774fd077c9bdbd6235a7aadc661ef60a9727',
+  'dart_stream_channel_tag': 'd7251e61253ec389ee6e045ee1042311bced8f1d',
   'dart_test_reflective_loader_tag': '0.1.9',
   'dart_tflite_native_rev': '0.4.0+1',
   'dart_typed_data_tag': 'f94fc57b8e8c0e4fe4ff6cfd8290b94af52d3719',
   'dart_usage_tag': '3.4.0',
-  'dart_watcher_rev': '5df2e364b0c3ec12b9ed9cf2eedb71f9ddf8b7cd',
+  'dart_watcher_rev': '64e254eba16f56d41f10d72c0b1cb24e130e1f8b',
 
   'ocmock_tag': 'v3.7.1',
 
@@ -193,7 +193,7 @@ deps = {
    Var('dart_git') + '/dart2js_info.git@0632a623b08e1f601c7eba99e0186a581ae799e9',
 
   'src/third_party/dart/third_party/pkg/dartdoc':
-   Var('dart_git') + '/dartdoc.git@8f5f30e58bbc0f11f104888ee87f11cbd6b82cc7',
+   Var('dart_git') + '/dartdoc.git@39cec16700839847876849fef4f0769f8689b6c8',
 
   'src/third_party/dart/third_party/pkg/ffi':
    Var('dart_git') + '/ffi.git@a90bd424116fb6f416337db67425171f2dc4c98f',
@@ -208,7 +208,7 @@ deps = {
    Var('dart_git') + '/html.git@22f17e97fedeacaa1e945cf84d8016284eed33a6',
 
   'src/third_party/dart/third_party/pkg/http':
-   Var('dart_git') + '/http.git@20e3a594872ae1565249c7cfc8977f9a10ca9927',
+   Var('dart_git') + '/http.git@a8efbef05a58919dc7aa2dab42198334f2459ffb',
 
   'src/third_party/dart/third_party/pkg/http_multi_server':
    Var('dart_git') + '/http_multi_server.git@ea269f79321d659208402088f3297e8920a88ee6',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 05cfe341fa933d3a5579dc6246524c80
+Signature: 0846deab5c76408f91ea7d1470b82c6d
 
 UNUSED LICENSES:
 
@@ -8488,6 +8488,8 @@ FILE: ../../../third_party/dart/runtime/vm/dispatch_table.cc
 FILE: ../../../third_party/dart/runtime/vm/dispatch_table.h
 FILE: ../../../third_party/dart/runtime/vm/field_table.cc
 FILE: ../../../third_party/dart/runtime/vm/field_table.h
+FILE: ../../../third_party/dart/runtime/vm/heap/become_test.cc
+FILE: ../../../third_party/dart/runtime/vm/heap/weak_table_test.cc
 FILE: ../../../third_party/dart/runtime/vm/port_set.h
 FILE: ../../../third_party/dart/runtime/vm/tagged_pointer.h
 FILE: ../../../third_party/dart/runtime/vm/timeline_macos.cc