Roll Dart SDK from e655b9a3839e to b58cfe5ab24e (1 revision) (flutter#21919)

https://dart.googlesource.com/sdk.git/+log/e655b9a3839e..b58cfe5ab24e

2020-10-16 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.11.0-230.0.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,asiva@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

@@ -34,7 +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': 'e655b9a3839e97957aa9cfffa47a85577e27481d',
+  'dart_revision': 'b58cfe5ab24e7756d672c0257ed30888edfd3c27',
 
   # 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: e370b81d8d5a8d4a3bc357f2d24d4664
+Signature: f220de2417f1bc266ae25ece48bf4216
 
 UNUSED LICENSES: