Fixes https://github.com/flutter/flutter/issues/53117

Test added:
- ShellTest.CanLoadSkSLsFromAsset

Rolls buildroot to enable sysroot for Linux host builds by default.

Part of flutter/flutter#53176

* Revert getSystemGestureExclusionRects and setSystemGestureExclusionRects 

* Remove references to removed PlatformChannelTest.java file

Fuchsia is the main consumer of these CIPD packages and - to simplify
its infrastructure - it is migrating its SDK partners over to producing
a CIPD package containing a flat .build-id directory.

This change also updates the CIPD package so that the .build-id
directory is placed at the root.

Bug: fxbug.dev/41443

This was originally added in 3c1c3e26 as
a means of avoiding running framework tests if they're known to be
failing, but given how flaky Cirrus infrastructure has historically
been, the number of false positives is too high.

https://dart.googlesource.com/sdk.git/+log/28c4c6c156e5..114752421dca

git log 28c4c6c156e5..114752421dca --date=short --first-parent --format='%ad %ae %s'
2020-04-08 srujzs@google.com [dart:html] Remove multitest usage in some js tests
2020-04-08 jcollins@google.com Switch migration to the isolate client.
2020-04-08 jwren@google.com Follow up on https://dart-review.googlesource.com/c/sdk/+/142705 to fix the assertion in the new completions in FieldDeclarations
2020-04-08 rmacnak@google.com [vm, service] Explicitly mention that timeline events are not ordered.
2020-04-08 rnystrom@google.com Migrate language_2/factory to NNBD.
2020-04-08 rnystrom@google.com Migrate language_2/field to NNBD.
2020-04-08 nshahan@google.com [ddc] Run modular test suite in weak mode
2020-04-08 sra@google.com [js_runtime] Streamline String.fromCharCodes
2020-04-08 joshualitt@google.com [dart2js] Always compute platform binaries.
2020-04-08 scheglov@google.com Issue 41399. Check for 'dynamic' and 'Never' when verifying EXPORT_LEGACY_SYMBOL.
2020-04-08 scheglov@google.com Make all named parameters of BestPracticesVerifier required.
2020-04-08 brianwilkerson@google.com Update code_metrics to support running it over a corpus
2020-04-08 scheglov@google.com Support for analysis options in FileResolver.
2020-04-08 scheglov@google.com Remove the special case for getGreatestLowerBound() in inference.
2020-04-08 scheglov@google.com Don't report MISSING_DEFAULT_VALUE_FOR_PARAMETE for external factory constructors.
2020-04-08 kustermann@google.com Revert "Reland "[vm, gc] Parallel scavenge.""
2020-04-08 kustermann@google.com [vm/compiler] Use pc-relative calls to various stubs by moving the stubs to the isolate

Created with:
  gclient setdep -r src/third_party/dart@114752421dca

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC dart-vm-team@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: dart-vm-team@google.com

This rolls DEPS to pick up the new buildroot sysroot scripts, and uses
them to download a sysroot on Linux. The sysroot isn't yet used by
default; that will be added in a later PR.

Part of https://github.com/flutter/flutter/issues/53176

https://skia.googlesource.com/skia.git/+log/f6860405e1bf..8561fc23c927

git log f6860405e1bf..8561fc23c927 --date=short --first-parent --format='%ad %ae %s'
2020-04-08 egdaniel@google.com Update gpu flush semaphore contract.
2020-04-08 senorblanco@chromium.org Dawn: staging manager rewrite.
2020-04-08 fmalita@chromium.org [SVG] Fix spec links
2020-04-08 mtklein@google.com stifle leaks in terminator_CreateDevice()
2020-04-08 mtklein@google.com get skvm/llvm building again
2020-04-08 mtklein@google.com narrow use of fast_unwind_on_malloc=0
2020-04-08 mtklein@google.com shard ASAN bonusconfigs bot

Created with:
  gclient setdep -r src/third_party/skia@8561fc23c927

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 csmartdalton@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: csmartdalton@google.com

This reverts commit f6b8eda7.

* adding an apple script to quit safari

* making changes to utils and adding cleanup after unit tests failed

* switch saai quit to pkill instead of applescript

* adding toolexception

* adding a cleanup function option to felt.

* removing unnecassary await's added for the previos version of the PR

* removing unnecassary async

* fix analyze error

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

* Fix multi-reply on message channel. Add test
* Add check for viewInstanceCount
* skip no-headless test

* set -e on assemble_apk.sh

* build the necessary artifacts

* Add logs between fuchsia test steps.

Adding logs and date time in between steps will simplify finding the
steps that are failing during the fuchsia tests.

https://github.com/flutter/flutter/issues/54253

* Use date command instead of DATE..

* Remove extra log line.

* Same spacer lenght for all the log lines.

* Do not enable antialiasing by default in CanvasKit mode

* Add comment

This event goes from now -> current vsync target time
to avoid the limitations as seen in https://github.com/flutter/flutter/issues/54095#issuecomment-610636237

This event also tags additional metadata to capture
`vsync_transitions_missed` considering the refresh rate of the display.

https://skia.googlesource.com/skia.git/+log/b41a420ed8db..07b2bafbbc3c

git log b41a420ed8db..07b2bafbbc3c --date=short --first-parent --format='%ad %ae %s'
2020-04-07 mtklein@google.com build conservative stack frame on x86-64
2020-04-07 mtklein@google.com add and test stack load/store
2020-04-07 brianosman@google.com Remove secret wireframe mode from drawVertices
2020-04-07 mtklein@google.com remove "debian9" ASAN jobs
2020-04-07 brianosman@google.com Remove gamma GM
2020-04-07 csmartdalton@google.com Implement support for indirect draws
2020-04-07 scroggo@google.com Upgrade libwebp used for testing to v1.1.0
2020-04-07 robertphillips@google.com Remove GrStrikeCache.h from all other header files
2020-04-07 mtklein@google.com backup plan for ASAN bots
2020-04-07 reed@google.com approximate sine for skvm
2020-04-07 mtklein@google.com remove SK_USE_SKVM_BLITTER
2020-04-07 jlavrova@google.com Mixed languages text crashes
2020-04-07 reed@google.com remove deprecated concat44 -- use concat

Created with:
  gclient setdep -r src/third_party/skia@07b2bafbbc3c

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 csmartdalton@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: csmartdalton@google.com

Clarify that the test depends on the framework repo. It may fail if the
framework repo is broken, so the engine committer don't need to be in
panic.

Working theory is that adding async events with begin times
in the past causes the timeline to skip some events.

See: https://github.com/flutter/flutter/issues/54095

Relands #17489 with a fix for the unit test flake.

The previous unit test relied on the new instance not being created at the same memory address, which isn't guaranteed.