Roll Dart SDK from d872aea to 2d22e4c (14 revisions)

https://dart.googlesource.com/sdk.git/+log/d872aea6a645..2d22e4ca26ef

2020-06-23 [email protected] Set informative-region text color.
2020-06-22 [email protected] Migrate Isolate benchmarks to null safety
2020-06-22 [email protected] [dart2js] Remove HIs and HIsViaInterceptor
2020-06-22 [email protected] [vm/tool] Add legend to snapshot_analysis compare/summary output.
2020-06-22 [email protected] [vm/tool] Support V8 profiles in snapshot_analysis treemap
2020-06-22 [email protected] [vm/tool] Improvements to snapshot_analysis summary command.
2020-06-22 [email protected] [vm/tool] Support reading V8 profiles in snapshot_analysis tool.
2020-06-22 [email protected] [dart2js] Stop running dart2js_2 suite when running unittests.
2020-06-22 [email protected] Roll benchmarks-internal to dff8b1878dcb8bb861937bd5bea07d03dcf08251
2020-06-22 [email protected] Migrate language_2/type_variable to NNBD.
2020-06-22 [email protected] Update the isRunningOnBot() check in telemetry.dart for Travis, check for env.containsKey('BOT'), instead of env['BOT'] == true
2020-06-22 [email protected] [vm/compiler] Use unboxed index/length for GenericCheckBoundInstr on 64-bit architectures
2020-06-22 [email protected] opt meta into null safety
2020-06-22 [email protected] [infra] Update checked-in SDKs to 2.9.0-18.0.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 [email protected] 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': 'd872aea6a645fd9a7ad06a5ba939b59f85e3fdc6',
+  'dart_revision': '2d22e4ca26efad00d4ab61af08795c538d157a36',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -354,7 +354,7 @@ deps = {
    Var('dart_git') + '/package_config.git@9c586d04bd26fef01215fd10e7ab96a3050cfa64',
 
   'src/third_party/dart/tools/sdks':
-   {'packages': [{'version': 'version:2.9.0-16.0.dev', 'package': 'dart/dart-sdk/${{platform}}'}], 'dep_type': 'cipd'},
+   {'packages': [{'version': 'version:2.9.0-18.0.dev', 'package': 'dart/dart-sdk/${{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: 1cb9df8b77e05d24fd1f89b449bf18b3
+Signature: d3c2ac63fefcee1ce530e28f846554ac
 
 UNUSED LICENSES: