Dart SDK roll for 2018/05/30 (flutter#5421)

3b6caa3 Split UnresolvedNameGenerator
f50873d [fuchsia] Renaming component FIDL to fuchsia.sys.
13987b0 Add Forest method to access the name of a variable
declaration
3b86f82 [vm/corelib] Remove GrowableArrayMarker hack.
88127f1 Clean up num#toStringAsPrecision docs
1eb1885 tools/addlatexhash.dart: Remove unused import
03cb46a [vm/perf] Fix JITDUMP integration.
9d9eff4 Support sharing function signatures in deferred parts for
fast startup
ae9f5d2 Add Forest API for logical expressions
66c590d Add json/utf8 BOM support in changelog.
d116e62 Improve catch parameter recovery
aa8e2ee Revert "[vm] Add tests for determinism of script and AppJIT
snapshots."
ec47e52 Switch to non-alpha versions for analyzer/front_end/kernel.
aac0478 [vm] Add tests for determinism of script and AppJIT
snapshots.
6cc7aa8 Change names/declarations tasks in AnalysisDriver sync.
c30af41 Reapply "[mirrors] Add IsolateMirror.loadUri."
a40993a Observatory strong mode fix: Fix incorrect types in
DebuggerStackElement.
0fdfc9a Observatory strong mode fix: Add a needed implements clause.
209029a Observatory strong mode fix: Pass through a type parameter
in the implements clause for GuardedMock.
1d32368 Use selection to decide whether EXTRACT_LOCAL_VARIABLE and
EXTRACT_METHOD are available.

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': 'ff815d05a52c03a318bff51ba4529ff5210b7bd6',
+  'dart_revision': '3b6caa3517bcc7150030f240deedb010f5e3bc60',
 
   'dart_args_tag': '1.4.1',
   'dart_async_tag': '2.0.7',

travis/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: b46f9b886db2d2259c39fc00ce7c98e1
+Signature: 03b0b20989d06168f098a5a3a9f46ef7
 
 UNUSED LICENSES: