Cache a SkSurface with previously drawn shapes so that we do not need to draw them again in future frames.

On Nexus 5X test device, old render time for just the overlay was 1.3ms-3.0ms and this version improves to 0.9ms-1.3ms running flutter gallery in profile mode.

It should be sufficient to provide the matrix to preroll.

Changes included in this roll:

05ccfa8502 [VM] Reduce size of monomorphic entries in AOT on ARM/ARM64 & use smaller tail-calls in various places
805c92cf32 Add @TypeArguments as a valid type for BoundVariable.value
3af0db2f97 fix my name in .mailmap
0eee800e1b Report INCONSISTENT_METHOD_INHERITANCE for mixins.
c7960df357 Generate analyzer error codes from messages.yaml
e2fdd57664 Clarify ambiguous definition of constant interpolated string expressions.
24493c2f54 Add support for dartdevk to read Analyzer summaries into Kernel format
d32c8e4793 Generate error code index from "index:" field in messages.yaml
d0a5a4c22b Convert summarize_const_expr.dart to triple-slash comment style.
d32f524bb3 Fix NamespaceBuilder._addPublicNames for mixins.
aa003d4f8e [infra] Update checked in SDKs to 2.1.0-dev.4.0
7fa80d8200 Remove unused error codes
ae2f75abec Report CompileTimeErrorCode.MIXIN_APPLICATION_NO_CONCRETE_SUPER_INVOKED_MEMBER.
cbfc78f5b2 Parse mixin declarations as if they were classes
d97823b704 Revert "[VM] Add new SymbolConstant to package:kernel/ast.dart"
b6c98976d5 Report CompileTimeErrorCode.RECURSIVE_INTERFACE_INHERITANCE for mixins.
3ddc9bb329 Add a doc comment for String.compare
9281748a35 Check for conflicting static and instance members in mixins.
3346632ad3 Report CompileTimeErrorCode.EXTENDS_NON_CLASS for mixins.
f649a1f3cc Add a missing error message (issue 34412)
63fbfcc69a Translate InvalidInlineFunctionType to ParserErrorCode.INVALID_INLINE_FUNCTION_TYPE.

This reverts commit 35ddf873.

Buildbots are hanging while generating treemaps with LTO enabled.

https://skia.googlesource.com/skia.git/+log/2bf7a7bcc67f..bd6595544171


Created with:
  gclient setdep -r src/third_party/skia@bd6595544171

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://skia.googlesource.com/skia.git/+log/82bf31003c66..2bf7a7bcc67f


Created with:
  gclient setdep -r src/third_party/skia@2bf7a7bcc67f

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Enables LTO for android.

https://skia.googlesource.com/skia.git/+log/5518e65d90d7..82bf31003c66


Created with:
  gclient setdep -r src/third_party/skia@82bf31003c66

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://skia.googlesource.com/skia.git/+log/3c4d533d8ebd..5518e65d90d7


Created with:
  gclient setdep -r src/third_party/skia@5518e65d90d7

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://skia.googlesource.com/skia.git/+log/7891994e89a3..3c4d533d8ebd


Created with:
  gclient setdep -r src/third_party/skia@3c4d533d8ebd

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

 - Add missing Dart 2 flags to gen_snapshot invocation.
 - Disable brittle service test.

https://skia.googlesource.com/skia.git/+log/a2bc1ca21bbc..7891994e89a3


Created with:
  gclient setdep -r src/third_party/skia@7891994e89a3

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://skia.googlesource.com/skia.git/+log/cd9d074578e0..a2bc1ca21bbc


Created with:
  gclient setdep -r src/third_party/skia@a2bc1ca21bbc

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

https://skia.googlesource.com/skia.git/+log/40c7c64572bc..cd9d074578e0


Created with:
  gclient setdep -r src/third_party/skia@cd9d074578e0

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Thanks, Chinmay

Auto-roller completed checks. Merging.

Auto-roller completed checks. Merging.

This updates the embedder API but introduces no breaking ABI/API
changes.

This reverts commit 4c2448d1.

Auto-roller completed checks. Merging.

 - Switch core snapshot to Dart 2 and remove support for loading platform.dill.
 - Remove support for loading script snapshots.
 - Remove support for loading source.
 - Remove settings and fix names to reflect the above.
 - Remove support for loading the service isolate from source.

Auto-roller completed checks. Merging.

See https://github.com/flutter/flutter/issues/21348

Auto-roller completed checks. Merging.

Auto-roller completed checks. Merging.

This reverts commit f02fc8c1.

Auto-roller completed checks. Merging.

* Roll buildroot to be483cb1cd3a9c4313b2e534034d23a05c3d849e
* Rolls buildtools to c1408453246f0475547b6fe634c2f3dad71c6457

Auto-roller completed checks. Merging.

This fixes flutter/flutter#20788

* [fuchsia] Plumb root_surface_transformation in scene_update_context

To fix the Fuchsia build.

* Update scene_update_context.cc