Roll src/third_party/dart 3e5ed47777..b53dceadaa (5 commits)

b53dceadaa Update pubspec for dev_compiler and sourcemap_testing
eefc18dc82 Add a hook to AnalysisDriver on the current session to be discarded.
cda43dabda Use findNode.simple in migration test
bd51d6f120 [vm] Build scopes for implicit getters of static const fields
b876d12f03 Revert "[vm/compiler] Continued graph checker development"

DEPS

@@ -31,7 +31,7 @@ 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': '3e5ed477777b576bd451d19735f53ee9a5e749fe',
+  'dart_revision': 'b53dceadaa12672954f8f128ba486f578a03f8ff',
 
   # 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

-Signature: fb54646f5c94d18c6fe5c3e645d0bf05
+Signature: 3780931f44f0da4df096746e2a33a1b2
 
 UNUSED LICENSES: