Additionally, we now use the engine directly as a delegate instead of storing potentially dead runtime_controller.

Unit tests have been updated to include an engine restart check which would fail before the fix.

This fixes https://github.com/flutter/flutter/issues/40303

1. Various functionalities offered by this tool are now organized into commands (e.g. `felt test`, `felt check-licenses`).
2. The felt tool can now be invoked from anywhere, not necessarily from the web_ui directory.
3. This new structure helps us scale better as we add more commands (e.g. soon a `build/watch` command is coming).

dart-lang/sdk@7799f424f4 [CFE] Encapsulate int operations in separate classes for VM and JS
dart-lang/sdk@eb1a375749 [CFE] Consolidate double special cases for == and identical.
dart-lang/sdk@7b60ae1a0d [cfe] Fix infer expression

https://skia.googlesource.com/skia.git/+log/86c48abc94f3..c22498502cda

git log 86c48abc94f3..c22498502cda --date=short --no-merges --format='%ad %ae %s'
2019-09-16 bsalomon@google.com Mark last render target bound ID invalid after clearing texture levels using glClear

Created with:
  gclient setdep -r src/third_party/skia@c22498502cda

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TBR=brianosman@google.com

Cf. dart-lang/sdk@74cff6c7df3e8f212c7f41a3a25631e007abc0f7

dart-lang/sdk@a8f433820b [fasta] Add test for split dill

Roll fuchsia/sdk/core/linux-amd64 from Ha3yC... to rwf0-...

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Roll fuchsia/sdk/core/mac-amd64 from tg1Em... to xPX7p...

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dart-lang/sdk@f8f0b845c2 [vm/bytecode] Fix lazy lookup of line starts with bytecode and app-jit
dart-lang/sdk@aa318ee261 Add Class/TypeParameter/FunctionTypeAliasElement.instantiate() methods.
dart-lang/sdk@4575e4df37 fix for UNUSED_LOCAL_VARIABLE
dart-lang/sdk@4512b22595 [vm/fuzzer] Call all virtual methods
dart-lang/sdk@f7638fc2fb [vm/fuzzer] Filter exponential assigments
dart-lang/sdk@f234830998 Cut dart:ffi dependency to fix simarm build
dart-lang/sdk@64d4fc59fe [vm/bytecode] Load referenced classes more efficiently
dart-lang/sdk@3e1154cb5b [vm/bytecode] Move CheckStack after function type arguments handling
dart-lang/sdk@bded2e015e [vm/fuzzer] fix newline when printing timeouts
dart-lang/sdk@8d7daafdaf [dart_internal] Bump SDK upper-bound to <2.7.0
dart-lang/sdk@7ee192e7c7 [vm/bytecode] Do not create bytecode CodeBreakpoint if interpreter is not enabled
dart-lang/sdk@330fccbc0d Implement extension override in summary2
dart-lang/sdk@08518a6d5e Stop using ClassElement.type and InterfacecType.instantiate in TypeSystem tests.
dart-lang/sdk@d53086e005 Fix strict-inference failure on ctor call to allow upwards dynamic
dart-lang/sdk@ed9e89ea38 Implement a basic WASM API using wasmer.
dart-lang/sdk@e8413cd08d Add a fix to allow unqualified references to static members to be qualified.

https://skia.googlesource.com/skia.git/+log/cb52badca04a..86c48abc94f3

git log cb52badca04a..86c48abc94f3 --date=short --no-merges --format='%ad %ae %s'
2019-09-16 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 b1580a276713..d32dae1bb37c (5 commits)
2019-09-16 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps
2019-09-16 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader adb0d51ca672..30847688f059 (2 commits)
2019-09-16 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 465489971eea..48c8f915e06e (416 commits)

Created with:
  gclient setdep -r src/third_party/skia@86c48abc94f3

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https://skia.googlesource.com/skia.git/+log/2cb1315d99e4..cb52badca04a

git log 2cb1315d99e4..cb52badca04a --date=short --no-merges --format='%ad %ae %s'
2019-09-15 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update SKP version
2019-09-15 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps
2019-09-14 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-14 reed@google.com Revert "add guard to switch to SkPathTypes"
2019-09-14 reed@google.com add guard to switch to SkPathTypes

Created with:
  gclient setdep -r src/third_party/skia@cb52badca04a

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This reverts commit 3f76f55b.

This reverts commit b73cfdad.

https://skia.googlesource.com/skia.git/+log/cf4deab60e30..2cb1315d99e4

git log cf4deab60e30..2cb1315d99e4 --date=short --no-merges --format='%ad %ae %s'
2019-09-13 khushalsagar@chromium.org Reland "gpu: Update GrGLCaps usage of fTextureRectangle with chromium."

Created with:
  gclient setdep -r src/third_party/skia@2cb1315d99e4

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Roll fuchsia/sdk/core/mac-amd64 from gVBCH... to tg1Em...

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Roll fuchsia/sdk/core/linux-amd64 from Xfeuz... to Ha3yC...

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This reverts commit 1a2c16b3.

Made the flutter view controllers dealloc notification more
generic and started turning off semantics when the view controller
is remotely deleted.

dart-lang/sdk@d0052c1b31 [dart:_http] Fix potentially large List<int> allocation in _WebSocketPerMessageDeflate.processIncomingMessage
dart-lang/sdk@4aa820bbf5 Reland "[vm/bytecode] Switch kernel service dill to bytecode if building Dart SDK with --bytecode"
dart-lang/sdk@f20f619050 Add 'variance' experimental flag.
dart-lang/sdk@139889e2b9 Fix a couple of diagnostic messages and re-order several constants to restore alphabetic ordering
dart-lang/sdk@daa22105fd More clean up for TypeSystem tests.
dart-lang/sdk@3129ad9585 Only report a non-const initializer for const variables; fixes #35985
dart-lang/sdk@f8f7a5a6c1 Migration: add a test case documenting the need for definite assignment integration
dart-lang/sdk@366b4056e6 Migration: add a test case documenting a problem with back-propagation of non-nullability
dart-lang/sdk@25401964ab Pass proper file URI under both Windows and not
dart-lang/sdk@f35f9e8e24 [kernel] Don't lazy load classes when dills are concatenated
dart-lang/sdk@b65120eae7 [vm/ffi] Update CSP after Enter/ExitSafepoint slow-path stubs on ARM64.
dart-lang/sdk@2a12c63631 [cfe] Use SuperPropertySet for super assignment
dart-lang/sdk@4b72fffaaf [cfe] Use VariableSet for variable assignment
dart-lang/sdk@2153a06b82 [cfe] Use PropertySet for property assignment
dart-lang/sdk@4fd7bf7356 [cfe] Split inference of super property get from instance property get
dart-lang/sdk@f8f37c131b [cfe] Split inference of super method invocation from instance method invocation
dart-lang/sdk@7d2ebd3ce9 [cfe] Introduce InternalExpression
dart-lang/sdk@2c6f779a76 [cfe] Remove legacyMode
dart-lang/sdk@392cd3b26f [cfe] Delete InferredTypeVisitor
dart-lang/sdk@71534fe18c [cfe] Make *Impl classes
dart-lang/sdk@15ccf4c703 [cfe] Remove unneeded Judgments
dart-lang/sdk@7985b187ab [cfe] Remove ExpressionJudgment.inferredType

This is to account for fxb/36483

https://skia.googlesource.com/skia.git/+log/043dba039e0d..cf4deab60e30

git log 043dba039e0d..cf4deab60e30 --date=short --no-merges --format='%ad %ae %s'
2019-09-13 ethannicholas@google.com Improved skslc depth tracking
2019-09-13 michaelludwig@google.com Always create an approx-size texture for approx-fit proxies
2019-09-13 ethannicholas@google.com SkSL now supports constant 1/0 in all swizzle channels, as well as "LTRB" as an alias for "xyzw" / "rgba".
2019-09-13 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-13 mtklein@google.com test we already have SkPicture::drawsNothing()

Created with:
  gclient setdep -r src/third_party/skia@cf4deab60e30

If this roll has caused a breakage, revert this CL and stop the roller
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TBR=mtklein@google.com

This reverts commit d026bf6c.

This will have to be landed on red since it's intended to make the tree red. It can be reverted once we've resolved the ongoing regression preventing the engine->framework roll.

This reverts commit 6beba539 as it breaks flutter on ios 32-bit devices.

Roll fuchsia/sdk/core/linux-amd64 from 6a4X4... to Xfeuz...

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https://skia.googlesource.com/skia.git/+log/be194479d27f..043dba039e0d

git log be194479d27f..043dba039e0d --date=short --no-merges --format='%ad %ae %s'
2019-09-13 michaelludwig@google.com Revert "Use "clamp" when reexpanding gaussian blurs"
2019-09-13 kjlubick@google.com [canvaskit] expose SkColorFilter and add SkColorMatrix helpers
2019-09-13 reed@google.com Pull path nested types out to root level
2019-09-13 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 f421e0e33e66..b1580a276713 (5 commits)
2019-09-13 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps
2019-09-13 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 4712e39822ec..465489971eea (366 commits)
2019-09-13 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 5a5ffe52a944..adb0d51ca672 (7 commits)
2019-09-13 reed@google.com make rectcontour and nestedrects private
2019-09-13 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-12 fmalita@chromium.org [skottie] Avoid reshaping text unnecessarily
2019-09-12 senorblanco@chromium.org Tiny Dawn fix: don't submit empty list of command buffers to the queue.
2019-09-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-12 senorblanco@chromium.org Update Dawn backend to recent GrGpu::onCreateTexture() change.
2019-09-12 jvanverth@google.com Fix ETC1 support on iOS.
2019-09-12 csmartdalton@google.com Use "clamp" when reexpanding gaussian blurs
2019-09-12 robertphillips@google.com Add bench for SkDDLRecorder detach
2019-09-12 bsalomon@google.com Make blurrect_compare GM work on GPUs without renderable A8
2019-09-12 bsalomon@google.com Update fully lazy proxy checks to look for negative w/h
2019-09-12 mtklein@google.com rewrite tricky loop to avoid -Wsizeof-array-div
2019-09-12 robertphillips@google.com Add kRG_1616 and kAlpha_16 SkColorTypes
2019-09-12 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 0b8eca795349..f421e0e33e66 (6 commits)
2019-09-12 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps

Created with:
  gclient setdep -r src/third_party/skia@043dba039e0d

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Bug: None
TBR=mtklein@google.com

Roll fuchsia/sdk/core/mac-amd64 from JVZ_i... to gVBCH...

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dart-lang/sdk@a554c8be6b Fix language_2/flatten_test.
dart-lang/sdk@95d7749f48 [vm/compiler] OSR on non-empty stack integrity
dart-lang/sdk@683dca0e9a [vm/fuzzer] Fix an inconsistency with local names
dart-lang/sdk@7516af7237 Add support for test requirements.
dart-lang/sdk@1cd6518897 Revert "[vm/bytecode] Workaround for incorrect type parameters in function types"
dart-lang/sdk@d7dc524b5f [vm, bytecode] Use call-scoped temporaries for NativeArguments to reduce the frame size of Interpreter::Call.
dart-lang/sdk@9f778d69f4 Fix language_2/external_test.
dart-lang/sdk@a09845fe3d [vm/fuzzer] Track and print invalid test cases
dart-lang/sdk@c138b505be Update TypeSystem tests to reuse AbstractTypeSystemTest.
dart-lang/sdk@c858519064 Delete lib_2/async/timer_not_available_test.

This reverts commit 46ff0534 as it breaks mac tests https://ci.chromium.org/p/flutter/builders/prod/Mac%20Host%20Engine/2156.

Creates a starting point for an app delegate. For now it just
incorporates the menu and window renaming functionality that's currently
in the FDE example, but in the future this will also do forwarding of
application lifecycle events to plugins.

Fixes https://github.com/flutter/flutter/issues/32419

* Roll dart to d9489622befb638c040975163cf9b8eba2ff057b.

Changes since last dart roll
```
d9489622be Revert "[build] Speed up debug and simulator builds by running steps on the prebuilt VM."
35d1333c2f [vm] remove token position for ExceptionHandlers
5beca80bc7 [analyzer] add isNullAware to IndexExpression
2bc48ad1b6 [analyzer] add isNullAware to propertyAccess
cfd1efc0d9 [vm/bytecode] Fix getting of target of dynamic invocation forwarder
68bcc00d10 [analyzer] implement isNullAware for method invocations
351acd155d [build] Fix application_snapshot.gni for uses outside of utils/xyz.
7badd807b1 Add a fix to replace an override with the extension name if accessing a static member
c72a8589d9 Don't use DartType.instantiate() in TypeProviderImpl.
49de78b708 Convert tests so that they will continue to pass when extension methods are enabled by default
9d3de982c6 fix for REMOVE_UNUSED_LABEL
97925ece63 Delete test_runner/tool/co19.dart
68022510a4 Revert "[vm, service] Remove _collectAllGarbage."
892187eff7 [dart2js] Ensure JSInvocationMirror.typeArguments is unmodifiable.
81c9fb8e63 Fix corelib_2/nsm_invocation_generic_test.
6a2a20207a Auto-CC dart2js on changes to the js_runtime sdk.
29ce9350d3 Migration: add a test case documenting a problem with "is" checks.
152fbbb1d9 Migration: add a test case documenting an operator== corner case.
83930fdc75 Reformatted extension method tests.
4331e7e5fa Fix bad tests setter_no_getter_test and syntax_test.
fc2f744d9e Deprecate 'Source.encoding'.
74cff6c7df [build] Speed up debug and simulator builds by running steps on the prebuilt VM.
59bcc4ea1e [vm/kernel] record yield positions at streaming flow graph builder
c74e68e501 Add documentation for more diagnostics
59008b8692 Skip parts with invalid URIs.
3b1d3de988 update parser to report out of order "?.." operator
420b292410 [vm/compiler] More work on the IL serializer.
ebf1f01ca5 [vm/compiler] Continued work on the IL deserializer.
bdf237fa77 (origin/base) [cfe] Add a bit to Library to inticate if it's opted in for NNBD
a350f6e57d [gardening] Always use Dart binary from checked-in sdk when running gen_kernel in vm/dart tests
94b3a3f2ac [cfe] Don't reuse type parameters of FunctionNode in its functionType
a9a9765eb3 [gardening] Skip dart/run_appended_aot_snapshot_test on simarm_x64
8b26ae942f Change name of test configuration on abi test builder.
ce5556ab36 [kernel] Load classes lazily
2bfe714d42 [kernel] Make class hierarchy member lists lazy
a62289451d Update changelog to include the recent breaking change
60ca2b840d Revert "Enable visibleForTesting on unnamed constructors"
```