We tried updating this for a while but we seem to have given up. This is now
stale. Removing the same.

https://skia.googlesource.com/skia.git/+log/f1b2b42613cb..9c1d30dd163e

git log f1b2b42..9c1d30d --date=short --first-parent --format='%ad %ae %s'
2020-01-27 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-27 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-27 mtklein@google.com draw whole grid
2020-01-27 fmalita@chromium.org [skottie] Cleanup: convert transform adapters to new pattern
2020-01-27 mtklein@google.com rm mtklein@chromium
2020-01-27 bsalomon@google.com Revert "Switch runtime SkSL to always sample at explicit coords"
2020-01-27 jvanverth@google.com Revert "Wrap page index packing in helper methods."
2020-01-27 brianosman@google.com Switch runtime SkSL to always sample at explicit coords

Created with:
  gclient setdep -r src/third_party/skia@9c1d30dd163e

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC reed@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Bug: None
Tbr: reed@google.com

…#15980)

`FlutterEnginePostCallbackOnAllNativeThreads` schedule a callback to be run on
all engine managed threads. The engine will attempt to service this callback the
next time the message loops for each managed thread is idle. Since the engine
manages the entire lifecycle of multiple threads, there is no opportunity for
the embedders to finely tune the priorities of threads directly, or, perform
other thread specific configuration (for example, setting thread names for
tracing). This callback gives embedders a chance to affect such tuning.

Fixes flutter/flutter#49551
Fixes b/143774406
Fixes b/148278215
Fixes b/148278931

This is unused.

#16071)

This was introduced in
c5329ef.

The assertion was originally written to check that more than 4 threads were
managed by the engine (UI, Platform, GPU, IO + ConcurrentWQWorkers). However,
the assertion actually only checked the count of workers in the ConcurrentWQ. As
written, this assertion would fail on all hosts with a hardware concurrency of
less than 4. Remove the assertion. The engine threads count and its assertions
already check callbacks on workers. So this check was incorrect and redundant.

…ds thread safe. (#16081)

This is only used in the command line VM. The only conceivable use of this would
be with IsolateMirror.loadURI which is not supported in Flutter or used in known
embedder API implementations (even ones that use mirrors).

…s members. (#16085)

This is in the same vein as #16081 but
includes holding the mutex when updating all members in the Captures struct
instead of just when tracking thread IDs.

* Revert "Web PargraphStyle TextHeightBehavior integration (#16075)"

This reverts commit 86682a2.

* Revert "Engine/LibTxt/dart:ui impl of TextHeightBehavior (#15087)"

This reverts commit cbf4536.

…rkers. (#16074)

The current count is determined from std::thread::hardware_concurrency which can
return zero. Even in such cases, the implementation may not return a loop with
no workers. There are numerous components that depend on having non-zero workers
in the queue.

…latform view (#16068)

This reverts commit ef3aa01. This address the use case of an internal customer. In a subsequent patch, I will add a test for this functionality. Instead of removing support for the same from tonic (along with the stuff surrounding filesystem access and package map handling), I’ll rework the same to use FML to avoid code duplication and maintainability.

Roll fuchsia/sdk/core/mac-amd64 from gNitp... to 5fMtM...

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/fuchsia-mac-sdk-flutter-engine
Please CC  on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

…ess of platform view (#16068)" (#16161)

This reverts commit 0889e97.