Allows embedders to specify a callback to be invoked in isolate scope
once root isolate has been created and marked runnable.

As an example of where this is useful, embedder unit test fixtures may
want to include Dart functions backed by a native implementation. On
isolate creation, this patch allows the unit test author to call
Dart_SetNativeResolver in root isolate scope.

caa8747 Rework dartfix NNBD fix to use new NullabilityMigration engine
ae5bd68 Lower relevance of deprecated suggestion sets.

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2019-02-06 [email protected] Add BOT/EOT to Shaper.
2019-02-06 [email protected] bin/gn format gn/skia.gni
2019-02-06 [email protected] Remove the distinction between key and device descriptors
2019-02-06 [email protected] Roll HarfBuzz
2019-02-06 [email protected] SkLoadICU: simplify
2019-02-06 [email protected] Move GrContextPriv methods to their own .cpp file
2019-02-06 [email protected] add mad() and shuffle() to SkVx
2019-02-05 [email protected] Add a GpuGM class for GPU-only tests

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…ngine/systemchannels/ (#7500)

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2019-02-06 [email protected] Roll recipe dependencies (trivial).
2019-02-04 [email protected] move SkMetaData into src

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…_platform.dill files (#7725)

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2019-02-07 [email protected] Update go_deps asset

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6c680a0 Update dartfix readme and update version numbers
33337cf Fix API breakage, reexport ConstantEvaluator.
c2cdc1c Allow migration of multiple files at once.
d68d852 Allow nullabilty migration prepareInput/processInput to operate on different ASTs.
5ecf660 [dartdevc] skip co19 tests on linux bots
ba9fbda Rework provisional migration API.
a4b681b Update dartdoc to 0.28.1+2.
fea5413 [ VM ] Fix hang of Flutter engine tests caused by global RuntimeEntry objects being destroyed when exit() is called when the VM hasn't finished shutting down.
a5570bd [vm/compiler] Add optimization flag
f0d5cb7 Guard the custom formatter for a Map against errors
df77978 Support two more cases in the convert-to-spread assist (issue 35867)
fd2225a Adapt to the flow analysis spec v2.

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2019-02-07 [email protected] Roll ../src c27b32b2fd52..635f11205d4b (414 commits)
2019-02-07 [email protected] Revert "Add a GpuGM class for GPU-only tests"

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git log c19d81a..9564bf4 --date=short --no-merges --format=%ad %ae %s
2019-02-06 [email protected] Upgrade NVIDIA driver on Ubuntu18 QuadroP400 bots.
2019-02-06 [email protected] Add support for importing AHardwareBuffers into SkSurfaces.
2019-02-07 [email protected] SkWuffsCodec: Initialize memory when incomplete
2019-02-07 [email protected] Add a k8s cheat sheet to trooper docs
2019-02-06 [email protected] Hide setDrawLooper -- deprecate loopers

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This header is now spelled thusly.