Roll src/third_party/dart fa74184b7a..093c2909fe (71 commits)

093c2909fe [dartdevc] Add implicit casts for SpreadElement nodes
f09097bab8 Add tests for "await for" in collection literals.
510d6f7789 Fix a bug in SDK constraint detection
db8dca4fbf dart:core: optional-new/const, named-default-separator, function-typedefs
c9ecdabe5d Revert "Combine override checks and override-based inference in one phase"
93e4ae4fdf [vm] Add flags to gen_kernel script to support old ABIs
8e0bb64bd1 [gardening] Mark reloaded files as other resources.
461d965d82 Reduce the priority of convertToAsync (issue 36327)
ab8510a0a5 [gardening] Fix arguments test for app_jit(k).
580f44aa83 [vm] Enable running FFI tests on Android in JIT-mode.
18a346c4e2 [infra] Protect against buggy approve_results versions causing an outage.
7ddeed1ba9 [gardening] Fix test harness handling of DartOptions
a13ac1b44f [infra] Fix approve_results not inserting primary keys for pre-approvals.
775dd08ae9 add some fixes to the widget transformer so it can find the flutter libs and assume the location arg exists on widget constructors
51da94da76 [fasta] Don't create forwarding stub if there's already a member
8d22c26c64 [CFE] Simplify tracking of unevaluated status.
2ce1af9cbe [CFE] Constant evaluation of newly added operators
0b3af295c0 [CFE] >>>= in fasta
b1e14cbe5f Change default of 'keepFields' in constant transformation to true
133d1b5afe [CFE] Allow 'as' and 'is' expressions as constants.
5f0de26d48 Clean up the remaining copyright notices
09ee45b4e2 Support for import prefixes.
c89642280c Infer types of fields from initializers.
9f864100aa Write / read codeOffset and codeLength for elements.
b0823ca558 Add a quick fix for the MISSING_ENUM_CONSTANT_IN_SWITCH diagnostic (issue 36290)
baa5628875 [infra] fix approve_results crashing on bad preapproval entry
9d7a0113cc Add test parts, fix for indexing enums.
26d707041a Resolve metadata on directives.
2f22932149 Use dynamic type arguments for TypeName without explicit type arguments.
36e6eb36c5 rename and reword invalid initializer error messages
290ab228b7 Resynthesize DefaultFieldFormalParameterElementImpl.
a0e0a7a150 [vm] Delete disallowed constructors/operators
bbe8adc827 [dartdevc] Support await within all CollectionElement nodes
59b8a9c4bb [vm] Free readonly header bit so it can be used for other uses.
466b6884dc add scanner/parser support for >>>=
9d616fe839 Add support for >>> in summaries
19a817e785 [analyzer] Fix utility classes ignoring await in for statement/element
dfae23d205 [dartdevc] fix #36293, call nSM on callable objects if the lookup fails
65b92e9579 [dartdevc] fix #36253, kernel backend now emits trackLibraries call
96a078ce76 Add quick fixes for new SDK constraint checks
0b4fdc46fe Compute export scopes for source libraries.
ee79ca9a74 dart2js support for loading .dill files built modularly
9c6a882af0 Add SDK constraint checks for the constant update 2018 features
a8d0a33360 Build elements for local FunctionExpression(s) and parameters while reading AST.
98dddc9daa [tests] Ensure that --enable-asserts is used whereever checked was used previously
a8831e7481 Handle _FROM_DEFERRED_LIBRARY codes for ui as code
14fcc352cd [gardening] Try troubleshoot flutter hhh buildbot.
ddcc63e1ad [Analyzer] move usage of mostSpecificTypeArgument in strong checker
c22c2b7645 Test that set/list if elements/else elements get implicit casts
c8c5eff08f [infra] Deflake tests that are both multitests and have multiple VMOptions lines
1bab46b06f [vm] Remove support for '-c', '--checked' flags and '--enable-checked-mode'
c614b99ae1 [vm] Load kernel service from ABI versioned dill file
7e170b351d [vm] Add whitespace before parenthesis.
b60eae48e5 Test that VM interpreter, bytecode, and unoptimized benchmarks can run.
2631fdf8cf [vm] Reclaim GraphMarked bit.
a447b36280 convert: remove private typedefs
485640df2e update scanner tests to use scanString
f3ac707aea report error for invalid super/this initializer
4cd410d6ac add parser listener handleErrorToken event
11a148c85e Add the ability to associate a URL with a diagnostic
87c553bf3c Ascribe constants to the member world impacts
f141914e65 Cleanup warnings in the analyzer code base
ecf5a46c96 [infra] Fix approve_results crashing on approvals for deleted tests.
849e914cb4 [infra] Fix per-CL approval not setting the expires field.
2aed6c0311 [CFE] >>> in fasta
94e214bacc [infra] Fix auto-approval breaking as of per-CL approval.
065910f0c1 [infra] Add support for pre-approvals in approved_results.json.
81b984d735 [gardening] Fix up name detection in isolate tests.
3de6276ad6 Handle deferred constants in the ssa builder
9db4119b67 Combine override checks and override-based inference in one phase
3678efae60 Test that map if elements/else elements keys/values get implicit casts

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': 'fa74184b7aad2a441a23c4c2f4160c09cc69ec32',
+  'dart_revision': '093c2909fedaaa4c1cbe21887bfbe97c59be21d2',
 
   # 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: a1b4b559a1f0f48db96b691ff133002c
+Signature: 191c43b2cc3260647a4ea7da4169f97e
 
 UNUSED LICENSES: