This reverts commit 8d9e4411c08b00ee004e55e6ebc344f86383a46b.

* Add clangd directory to gitignore

* Remove references to TOPAZ_ from #ifdefs

We missed these in the migration.

dart-lang/sdk@c3c31b74fd [parser] Fix bug wrt when the handleNonNullAssertExpression is added
dart-lang/sdk@3637e78014 Report inference failure on return types of typedefs and generic function types
dart-lang/sdk@40cc975932 Increase the severity of the unused_import hint (to a warning).
dart-lang/sdk@eac2eadff7 Stop using 'Element.type' in resolver.

https://skia.googlesource.com/skia.git/+log/3787f51c65c3..b23d66e10a98

git log 3787f51c65c3..b23d66e10a98 --date=short --no-merges --format='%ad %ae %s'
2019-09-27 brianosman@google.com Interpreter: Lots of minor cleanup/refactoring

Created with:
  gclient setdep -r src/third_party/skia@b23d66e10a98

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Roll fuchsia/sdk/core/mac-amd64 from HoRV8... to oob8T...

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Roll fuchsia/sdk/core/linux-amd64 from YDv3O... to qx53U...

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https://skia.googlesource.com/skia.git/+log/296743a86281..3787f51c65c3

git log 296743a86281..3787f51c65c3 --date=short --no-merges --format='%ad %ae %s'
2019-09-27 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 f703443b1f67..7f506bde16f1 (9 commits)
2019-09-27 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps
2019-09-27 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 30d3c8afe19c..6b4b8141e11d (2 commits)
2019-09-27 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src fbc0a229ff3c..996b39934b3a (495 commits)

Created with:
  gclient setdep -r src/third_party/skia@3787f51c65c3

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dart-lang/sdk@7901c508c8 [build] Enable ASAN leak detection during the build, not just tests.
dart-lang/sdk@75eb947bc8 [dart2js] New RTI: Support redirection in ruleset.
dart-lang/sdk@0c6249de26 [dart2js] New RTI: Remove converted closure classes from subtype metadata.
dart-lang/sdk@c1fdf3bde0 [dart2js] New RTI: Treat erased class type variables as dynamic.
dart-lang/sdk@e578b68b23 [dart2js] New RTI: Don't emit $as methods.
dart-lang/sdk@7a24aec8f4 [vm] Wasm function imports
dart-lang/sdk@1375e262be Minor NNBD fixes for type algebra and DartType.toString.

https://skia.googlesource.com/skia.git/+log/b83cc76a5e3a..296743a86281

git log b83cc76a5e3a..296743a86281 --date=short --no-merges --format='%ad %ae %s'
2019-09-27 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

Created with:
  gclient setdep -r src/third_party/skia@296743a86281

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dart-lang/sdk@403c4af720 Update dart_style to 1.3.1.
dart-lang/sdk@4a69ac1344 [vm, bytecode] Generate bytecode per package in fronend_server incremental compiles.
dart-lang/sdk@48f7636798 [ package:vm_service ] Added `HeapSnapshotGraph`, a helper class which parses the responses from the `HeapSnapshot` event stream.
dart-lang/sdk@7263b9aa9d [vm/fuzzer] rename dartfuzz_ffiapi
dart-lang/sdk@402951b399 Stop using 'Element.type' in ErrorVerifier.
dart-lang/sdk@1707aff921 [dart2js] Mark pkg/modular_test/test/validate_{pipeline,suite}_test as slow.
dart-lang/sdk@f0e5b380ab [build] Fix the depfile for gen_kernel_bytecode_dill
dart-lang/sdk@e6eafe20f7 Fix strict inference on overriding methods and setters.
dart-lang/sdk@5b33baded9 Migration: fix trial_migration.dart's handling of `required`

Roll fuchsia/clang/mac-amd64 from HfPKR... to zpVtV...

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https://skia.googlesource.com/skia.git/+log/ec85f407bfee..b83cc76a5e3a

git log ec85f407bfee..b83cc76a5e3a --date=short --no-merges --format='%ad %ae %s'
2019-09-26 mtklein@google.com Reland "hsw::S32_alpha_D32_filter_DX"
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 mtklein@google.com reformat .gn files
2019-09-26 csmartdalton@google.com Reland "Remove the resolve rect and resolve types from GrRenderTarget"
2019-09-26 halcanary@google.com experimental/skottie_ios: Add methods to SkottieMtkView
2019-09-26 mtklein@google.com roll GN
2019-09-26 mtklein@google.com Revert "hsw::S32_alpha_D32_filter_DX"
2019-09-26 kjlubick@google.com [canvaskit] remove debugging code
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 egdaniel@google.com Fix vulkan caps checks for external formats.
2019-09-26 robertphillips@google.com Add mipmap support to SkPixmap flavor of createBackendTexture
2019-09-26 csmartdalton@google.com Revert "Remove the resolve rect and resolve types from GrRenderTarget"
2019-09-26 kjlubick@google.com [canvaskit] Create SkFontMgr from passed in data
2019-09-26 mtklein@google.com hsw::S32_alpha_D32_filter_DX
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

Created with:
  gclient setdep -r src/third_party/skia@b83cc76a5e3a

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Made creating and using a FlutterEngine a bit easier, to try to get it get it as easy to use as Android's equivalent.
* Added a default entrypoint variable.
* I added `run` to and `initWithName:` to FlutterEngine.

* added dispose handler for calls to flutter/platform_view

* improved comment

* add PersistedPlatformView attribute update handling to enable resizing

* update size of root element created by a PlatformView

* improved comments

* enforce effective size of PlatformView surface

* updated formating of platform_view.dart

* stop storing root element of PlatformView in its Surface

When the PlatformViemSurface adopts the DOM elements from a previous PlatformViewSurface the the stored value will lost.

* move setting overflow property to createElement

Roll fuchsia/sdk/core/mac-amd64 from z3PaM... to HoRV8...

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dart-lang/sdk@327bc451f8 Added variance support in listeners to ast.
dart-lang/sdk@07db94d454 Add support for details and implement some initial details for regions
dart-lang/sdk@f3793ab22d [tools] Update generate_idefiles.py to exclude analyzing sdk_nnbd
dart-lang/sdk@661816ea06 Use Context.separator in nnbd i13n output; Fixes #38574
dart-lang/sdk@38a3a6b6cb Don't use '.type' in TypeParameterMember.
dart-lang/sdk@3c18db7d9e update analyzer error message generator to generate hasPublishedDocs
dart-lang/sdk@5c5a76078e [dartdevc] improve escaping to handle kernel extension symbols
dart-lang/sdk@44da8af04f Reland "[vm, compiler] Reduce alignment of Instructions and remove some debugging trap instructions."
dart-lang/sdk@87d795c177 fix formatting
dart-lang/sdk@88f35f8319 [infra] Update checked in SDKs to 2.6.0-dev.3.0
dart-lang/sdk@2741022aa0 [vm/http] replace hard coded string in http headers
dart-lang/sdk@d2c0bffde3 Bump analyzer_plugin's maximum supported analyzer version

* reflect selection changes in Firefox. With this change if the keyboard arrow keys to move the cursor the selection change is synced to Flutter Framework

* Addresing PR comments. Renaming. Adding the domelement to SelectionChangeDetection constructor.

* add initial value to selection start/end

add initial value to selection start/end

https://skia.googlesource.com/skia.git/+log/559ffe4a23ce..ec85f407bfee

git log 559ffe4a23ce..ec85f407bfee --date=short --no-merges --format='%ad %ae %s'
2019-09-26 csmartdalton@google.com Remove the resolve rect and resolve types from GrRenderTarget
2019-09-26 ethannicholas@google.com Revert "Revert "remove 'in uniform' support from GrSkSLFP, make rules more clear""
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 kjlubick@google.com [canvaskit] fix null terminator on drawText
2019-09-26 bsalomon@google.com srgb texture format cleanup.
2019-09-26 michaelludwig@google.com Improve subpixel coverage calculation for thin quads
2019-09-26 bsalomon@google.com Check support for each GL format independently.
2019-09-26 fmalita@chromium.org [skottie] Add null sink option for skottie_tool
2019-09-26 herb@google.com Restrict SkStrikeInterface to GPU and rename to SkStrikeForGPU
2019-09-26 ethannicholas@google.com Revert "remove 'in uniform' support from GrSkSLFP, make rules more clear"
2019-09-26 fmalita@chromium.org [skottie] Minor MotionBlurEffect cleanup
2019-09-26 herb@google.com Blur both in x and y
2019-09-26 ethannicholas@google.com remove 'in uniform' support from GrSkSLFP, make rules more clear
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 ba04be8c9ef9..f703443b1f67 (6 commits)
2019-09-26 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps
2019-09-26 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader cc3f09861685..30d3c8afe19c (2 commits)
2019-09-26 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src fb8fbb18d6f2..fbc0a229ff3c (465 commits)
2019-09-26 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-26 jcgregorio@google.com Fix HOME directory in Docker containers built under cloudbuild.
2019-09-25 herb@google.com Move SkScalerContextEffects to SkScalerContext.h
2019-09-25 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-25 csmartdalton@google.com Move the msaa dirty rect to GrRenderTargetProxy
2019-09-25 mtklein@google.com clean up for SSSE3 bilerp
2019-09-25 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-25 nifong@google.com Add a test that draws subpictures within an MSKP and make it pass.
2019-09-25 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-09-25 herb@google.com Use constexpr version of min/max
2019-09-25 brianosman@google.com In AAConvexPathRenderer, don't assume that path direction can be computed
2019-09-25 nigeltao@google.com Fix calls to deprecated Wuffs API
2019-09-25 mtklein@google.com cut another multiply in SSE2 bilerp
2019-09-25 nifong@google.com Add tests that loads mskp and changes frame.
2019-09-25 mtklein@google.com cut a multiply in SSE2 bilerp
2019-09-25 csmartdalton@google.com Don't submit msaa resovle command buffers except for external IO
2019-09-25 herb@google.com Add helper SkMakeZip
2019-09-25 mtklein@google.com comment and TODO bilerp code
2019-09-25 herb@google.com Add project declaration for CMake
2019-09-25 mtklein@google.com opt skottie_tool into thread-local strike caches
2019-09-25 robertphillips@google.com Split out check_base_readbacks sub-test in BackendAllocation tests
2019-09-25 mtklein@google.com dump frame time stats in skottie_tool

Created with:
  gclient setdep -r src/third_party/skia@ec85f407bfee

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Roll fuchsia/sdk/core/linux-amd64 from PyQPO... to YDv3O...

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This reverts commit 147d0c38.

Fixes https://bugs.chromium.org/p/skia/issues/detail?id=9467

dart-lang/sdk@6ff8d2199d [cfe] Don't crash on constructors in extensions

dart-lang/sdk@53564db036 [cfe] Handle implicit extension call()
dart-lang/sdk@ee7aae43c0 [cfe] Handle explicit extension index access
dart-lang/sdk@0bf6b6ae64 [cfe] Handle instantiation of extension tear-offs and check bounds on extension method invocation
dart-lang/sdk@acfda5d837 [CFE] Parser test framework
dart-lang/sdk@cff2b10a28 Update dart_style to 1.3.0.
dart-lang/sdk@6b1b530081 [dartdevc] Renaming reserved JS members only when not explicitly used in JS interop.

Roll fuchsia/sdk/core/mac-amd64 from KcXAg... to z3PaM...

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dart-lang/sdk@dd65f97118 [vm/bytecode] Save/restore globalDebuggingNames around bytecode generation
dart-lang/sdk@9c8de83ced Fix strict-inference for function expressions which can properly infer
dart-lang/sdk@c49d3c3486 Use a root directory for NNBD i13n output.

dart-lang/sdk@c6a14f4459 [vm/fuzzer] Fix heapsize
dart-lang/sdk@8dcf5cb413 Remove IncrementalAstCloner and TokenMap.
dart-lang/sdk@034c529cd1 Ignore failing test on Windows.
dart-lang/sdk@7472da8e25 Make allowInterop idempotent in DDC
dart-lang/sdk@bd3792e714 Remove unused MapIterator and implementations.
dart-lang/sdk@fa879f2b18 Stop using ClassElement.type in ElementResolver, infer annotation constructor type arguments.
dart-lang/sdk@80c045ee82 [vm/fuzzer] Fix non minimized test runs
dart-lang/sdk@e6574a7964 [vm] Add --show-invisible-isolates.
dart-lang/sdk@cd51a30805 Remove deprecated 'assertErrorCodesInCode'.
dart-lang/sdk@d1256a23f9 Deprecate 'useDart2jsPaths' in SdkLibrariesReader and make it optional.
dart-lang/sdk@e2a3f9a9d7 [vm/bytecode] Move bytecode metadata when creating a fresh component
dart-lang/sdk@f7b6169e18 Migration: add `required` keyword instead of `@required` annotation.
dart-lang/sdk@344b30e8ce Enable pedantic 1.8.0 in analyzer, analysis_server

This reverts commit c1773f3c because it breaks the Flutter framework build.

Roll fuchsia/sdk/core/linux-amd64 from worpw... to PyQPO...

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dart-lang/sdk@6c81690c3a Flow analysis: add tests of things that shouldn't be promoted.
dart-lang/sdk@39a1baef6b Prepare to publish analyzer 0.38.4
dart-lang/sdk@3e71f286f6 [vm/fuzzer] Add auto minimization tool
dart-lang/sdk@5f74cc1e59 test for eof comment completions
dart-lang/sdk@b31e71e990 Revert "Issue 37608. Use instantiated FunctionType for tear-off(s)."
dart-lang/sdk@b325f8e965 Update checker.dart to use less Element.type
dart-lang/sdk@7235115f36 statement completion for expression bodies
dart-lang/sdk@2bd2392e2a Remove EngineTestCase.
dart-lang/sdk@f5ce531db3 [dartdevc] Allow ddc modular suite to apply SDK patch files from forked directory
dart-lang/sdk@c3bbd6a247 Added parser recovery for multiple variance modifiers.
dart-lang/sdk@9a683de40d [vm] Support testing assembly snapshots for ARM.
dart-lang/sdk@a2803a1b2d Add documentation for more diagnostics
dart-lang/sdk@bf361ebe19 Replace addTestFile()/resolveTestFile() pair with resolveTestCode().
dart-lang/sdk@bd1ca04b79 add meta dependency to kernel and front_end
dart-lang/sdk@7972c61aab fix detection of dart sdk lines in stack traces to recognize the ddk sdk
dart-lang/sdk@60328ca858 [vm] Restore _getHash/_setHash asm intrinsics
dart-lang/sdk@41dd8b522c [SDK] Further adjusts flags for dart2native.
dart-lang/sdk@9f0258f4b6 Include more information for 'Missing library'.
dart-lang/sdk@e034104f04 [cfe] Remove TypeEnvironment.*Type getters
dart-lang/sdk@463894f986 [cfe] Remove NullabilityBuilder.legacy
dart-lang/sdk@4209c50587 [cfe] Remove NullabilityBuilder.pendingImplementation
dart-lang/sdk@fdc34003e9 await futures
dart-lang/sdk@8cbc4f3982 [benchmark] Add support for benchmarking DDC.
dart-lang/sdk@b03d472e4c [cfe] Handle default values on extension methods
dart-lang/sdk@1ffbebe07a Revert "[cfe/vm] Enable prefer_final lints in pkg/vm"
dart-lang/sdk@12f6cbb7b1 [cfe] Thread nullability modifiers for TypeParameterTypes from source
dart-lang/sdk@13fcf27c25 [cfe] Implement library-specific NullabilityBuilder getters
dart-lang/sdk@db3bf8f509 [cfe] Preserve abstraction level in TypeDeclarationBuilder.buildType
dart-lang/sdk@adbfe7ce05 [cfe] Update the rules for TypeParameterType.nullability
dart-lang/sdk@f2743fceee Fix language_2/extension_methods/basic_static_extension_test
dart-lang/sdk@7b9bcd08b4 [cfe] Correctly substitute function types from extension on-clauses
dart-lang/sdk@2f7ad92ee4 [cfe] Handle null aware explicit extension application
dart-lang/sdk@763421a88e Add a first test of the InfoBuilder
dart-lang/sdk@9754f19eb6 [dart2js] dead code elimination can create GVN candidates
dart-lang/sdk@0fe9634425 Skip wasm tests on dart2js
dart-lang/sdk@6d86779288 Make the NNBD fork not stomp on the other build.
dart-lang/sdk@35748514c7 [ VM / Service ] Added additional tests for package:vm_service and fixed service bugs
dart-lang/sdk@79cc54e519 [kernel] Avoid trampling sources when loading split components.

Roll fuchsia/sdk/core/mac-amd64 from avi05... to KcXAg...

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This change modifies the accessibility bridge so that if a node has input focus, then it will tell TalkBack so that it will request the accessibility focus for the view.

It also sets the content change types bit field to include CONTENT_CHANGE_TYPE_SUBTREE to indicate that the subtree for the view has changed for API levels after, and including, KitKat (19)

* filter test targets; cache host.dart compilation

Samsung's Korean keyboard has a bug where it always attempts to combine
characters based on its internal state, ignoring if and when the cursor
is moved programmatically. EG typing "ㄴㅇ" and then moving the cursor
back to the front of the text and typing "ㄴ" again would result in
"ㄴㅇㄴ", not "ㄴㄴㅇ".

Fully restarting the IMM works around this because it flushes the
keyboard's internal state and stops it from trying to incorrectly
combine characters. However this also has some negative performance
implications, so we only apply the workaround on Samsung devices set
to use Korean input.

This also effectively disables the feature on Samsung keyboards that
allowed users to re-open a composing region for previously typed
characters. See https://github.com/flutter/flutter/issues/29341#issuecomment-531283508.

Fixes flutter/flutter#29341.