https://skia.googlesource.com/skia.git/+log/d89d445dea5e..b5de6be2a85d

2021-08-10 brianosman@google.com Rewrite CheckModifiers to reduce code bloat
2021-08-10 bungeman@google.com Fix typeface GMs to draw or skip
2021-08-10 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 4eac0bf1a95b to 81bee2e7f6de (5 revisions)
2021-08-10 johnstiles@google.com Reduce template usage in evaluate-n-way-intrinsic.
2021-08-10 ethannicholas@google.com Added prototypes for DSLFunction
2021-08-10 jvanverth@google.com Metal: track all resources
2021-08-10 johnstiles@google.com Reland "Fix array-of-matrix/struct comparisons in Metal."
2021-08-10 drott@chromium.org [COLRv1] Add blend mode 'plus'
2021-08-10 reed@google.com In SkCanvas destructor, discard (rather than blit) unbalanced layers
2021-08-10 johnstiles@google.com Disable SkSL array-comparison test on Adreno.
2021-08-10 robertphillips@google.com Rename GrSurfaceContext -> skgpu::SurfaceContext
2021-08-10 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SK Tool from b3b66acf72ce to ed87d9cbdb9b
2021-08-10 johnstiles@google.com Reduce template usage in optimize-comparison.
2021-08-10 johnstiles@google.com Reland "Fix array-of-vector comparisons in Metal."
2021-08-10 johnstiles@google.com Avoid short/ushort in MSL code generator.
2021-08-10 johnstiles@google.com Fix duplicated array types in SPIR-V.
2021-08-10 michaelludwig@google.com Reland "Remove SkTLList"
2021-08-10 brianosman@google.com Move canvas helper structs to header
2021-08-10 erikrose@google.com Fix Build-Debian9-Clang-arm-Release-Flutter_Android_Docker job.
2021-08-10 johnstiles@google.com Reduce template usage in vector-coalesce functionality.
2021-08-10 michaelludwig@google.com Remove onSetDeviceClipRestriction from Device_v2

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 robertphillips@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/+doc/main/autoroll/README.md

This is part of the implementation of build/test separation.

Bug: https://github.com/flutter/flutter/issues/81855

* Fixed aria-live attribute on web

This eliminates the landmines hook.

build/landmines.py writes out a .landmines file at the root of the
buildroot. The first step of a `gclient sync` is to check for diffs
between that file and the new one, and if found, a clobber is performed.

We never actually use this functionality, and the code calls rmtree()
which (at least on macos) appears to choke on symlinks.

This deletes these scripts, and will be paired with the deletion of the
first gclient hook in the DEPS file in flutter/engine during the roll.

If we ever need this functionality, it's relatively straightforward to
add it back.

Issue: flutter/flutter#87960

At one point, this shard built the Android Vulkan binaries, but during
the migration to ci.yaml-based recipes, the gn and build steps for that
build were accidentally removed. As such, this shard no longer builds
anything.

This was detected when a buildroot roll triggered a clobber build which
caused the verify_exported.dart script to fail due to a missing 'out'
directory, which caused several of us to wonder why we were:
1. Checking that we strip release binaries on a debug bot, and
2. Why we're checking that we strip release binaries before we actually
   build anything at all.

It appears that we used to build android vulkan binaries, such as in
steps 14-16 of Build 11130:
* https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20Android%20Debug%20Engine/11130/overview

We migrated to ci.yaml-based infra in this commit:
* https://flutter-review.googlesource.com/c/infra/+/15660

A no-op rebuild was triggered in commmit:
* https://github.com/flutter/engine/pull/27599

Which triggered the following buikld, Build 11131:
* https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20Android%20Debug%20Engine/11131/overview

That build does not contain the gn or build steps for the Android Vulkan
binaries.

HOWEVER... we have no users actually using Android Vulkan binaries, so
rather than update the build to fix this, we delete the shard altogether
and save some CPU.

This will be followed by a patch that removes the --enable-vulkan flag
from gn and throughout our build.

Since verify_exported.dart is not run with assertions enabled, replace
the assertions with runtime checks and appropriate error messages:

* Adds a check for valid arguments and emits usage otherwise
* Adds a check for the presence of the out/ directory and exits with
  error if it does not exist.