The callbacks can be wired in via the Settings object. Both runtime and shell unit-tests have been patched to test this.

Fixes https://github.com/flutter/flutter/issues/31292.

If the mapping callback is not set or it the callback returns invalid data, ICU initialization will be embedder responsibility.

This affects all embedders and the following have been audited:
* Android: Via a symbol mapping.
* iOS: Via a file mapping.
* Embedder: Via a file mapping.
* Fuchsia: Via a VMO mapping
* Test shells and Flutter tester: Via file mapping with ICU data needing to be next to the executable.

https://skia.googlesource.com/skia.git/%2Blog/cc5d3e09e394..1c0b05afdef8

git log cc5d3e09e39410841ba6e8866680257a92ee5205..1c0b05afdef8c0366926d3a5cdbe828ff122cfe2 --date=short --no-merges --format=%ad %ae %s
2019-04-19 bsalomon@google.com SkClipStack::isRRect succeeds if stack is  an intersection of rects.
2019-04-17 csmartdalton@google.com ccpr: Calculate edge coverage in the coverage processor
2019-04-19 ethannicholas@google.com Fixed internal skslc error with negated literal vectors
2019-04-19 egdaniel@google.com Adjust vulkan memory allocation block size knobs to better match the type of draws we do.
2019-04-17 ethannicholas@google.com reworked SPIR-V binary operations and added support for VectorTimesScalar
2019-04-19 robertphillips@google.com Add explicit GrSurfaceProxy flag to skip explicit resource allocation
2019-04-19 halcanary@google.com SkQP: new docker test code
2019-04-19 ethannicholas@google.com fixed Metal code generation for recursive functions
2019-04-19 michaelludwig@google.com Don't batch across domain modes in GrTextureOp
2019-04-19 brianosman@google.com Convexity checker: Wait for significant x-product when walking edges
2019-04-19 michaelludwig@google.com Update compositing benchmark to use image-set API
2019-04-18 csmartdalton@google.com ccpr: Indicate path fill type by winding direction of cover triangles
2019-04-19 ethannicholas@google.com added error detection for writing to a constant swizzle mask
2019-04-19 kjlubick@google.com [spec] Initial commit for web spec

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The GetMapping calls removed in this patch had the same code and had to be repeated across different test harnesses as well as in dart_snapshot.cc. Just make this a factory method so the code is less verbose.

380d0ed Build host Dart binary with -march=core2 on Mac OS X. (#235)

https://skia.googlesource.com/skia.git/%2Blog/e5763787f920..cc5d3e09e394

git log e5763787f920c0c3a30527a596a6c207eb1b220b..cc5d3e09e39410841ba6e8866680257a92ee5205 --date=short --no-merges --format=%ad %ae %s
2019-04-19 ethannicholas@google.com Revert "Revert "added more SPIR-V RelaxedPrecision decorations""
2019-04-19 reed@google.com use char-to-glyph cache in freetype typeface
2019-04-19 brianosman@google.com Remove SK_TREAT_COLINEAR_DIAGONAL_POINTS_AS_CONCAVE

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As long as the Mac SDK is i386 ready, engine developers should be able to use the latest version of Xcode to build all artifacts. This issue goes away when gen_snapshot migrates to x64.

https://skia.googlesource.com/skia.git/%2Blog/e8a33ec6d084..e5763787f920

git log e8a33ec6d084fef3200eb8732b453734f4b391ca..e5763787f920c0c3a30527a596a6c207eb1b220b --date=short --no-merges --format=%ad %ae %s
2019-04-17 robertphillips@google.com Allow GrShadowRRectOp::Make to fail

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https://skia.googlesource.com/skia.git/%2Blog/8cdae55bf1ac..e8a33ec6d084

git log 8cdae55bf1ac0270b8f7c92f131ec9a18957e84d..e8a33ec6d084fef3200eb8732b453734f4b391ca --date=short --no-merges --format=%ad %ae %s
2019-04-19 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset
2019-04-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 82bcffa78747..145ec7fa7c81 (10 commits)
2019-04-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader abaecd5f2ba7..a16238df3f28 (12 commits)

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https://skia.googlesource.com/skia.git/%2Blog/9b67802a4cd0..8cdae55bf1ac

git log 9b67802a4cd01fbbe5fcbe9f4117ff68e7b8e751..8cdae55bf1ac0270b8f7c92f131ec9a18957e84d --date=short --no-merges --format=%ad %ae %s
2019-04-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src f968f64cdf27..a55917cb9824 (433 commits)

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This reverts commit 0fcfa0df.
Windows depends on referencing the snapshot symbols directly instead of
via dlsym. Something in the way these symbolsa are generated in
bin_to_assembly.py is causing them to be inaccessible at runtime.

This was used in some embedder implementations. But that was a while ago.

This reverts commit 905ddb6c.

cf4444b803 Revert "[ VM / Service ] Temporarily disable VM service auth codes by default"
f8491950fe Create List<TypeParameterElement>, not Impl.
fa7485f28e Build types for not simply bounded elements using dynamic type arguments.
9d376de55a [vm] Remove code collection.
0c0e49cd11 update keyword list to include "late" modifier
3cf3e4edde [dart/vm] Reduce trip count of osr test
503e20946c [vm] Start logging if shutdown takes too long.
2b9f968d2f Convert engine.dart to triple-slash comment style
73b917c014 [vm/compiler] Do not generate unnecessary field length guards
20fde9a6a8 Don't overwrite inherited types of fields with types of initializers.
e6e2a196a3 Issue 36667. Check for unresolved URI in getLibraryByUri().
6ac38a926c The synthetic default constructor should have reference.
92729e0cd3 Remove UndefinedTypeImpl.
cf77b82f52 [analyzer] handle youtube and animation dartdoc directives
6384f629c0 new conflicting-modifiers error code
f3703c1bce change "late" from built-in to keyword
af9c01432c Remove unused import
7b6b8f8c43 Restore 'parameters' and 'typeParameters' for ParameterElementImpl.
bc58bf598e Add summary serialization support for nullability suffixes.
8093f73424 [vm/dbc] Add UNREACHABLE() stubs to simulator_dbc.cc in 32-bit mode to make 32-build work
336fc9001c Fix for getting type of a DefaultFormalParameter during building types.
e93c6b7ce1 Add AST representation of the late keyword
43eebea5a3 [kernel_worker] retry on failure
284a299543 Fix mustCallSuper for mixins; fixes #36492
5a824581b7 Read directive annotations before returning offset.
703ccc974b Support for TypeParameter metadata.
242ed77040 Fix for FormalParameter without name.
92dd37081d Write / read Annotation element.
d8a0d68bd6 Rename devcompiler to ddc
6d91643073 [vm, interpreter] Handle closure case of invoke-field-dispatchers as bytecode.
b8a9711489 Update AstBuilder to handle "required" modifier
ca28e2c8ce forward "required" modifier to parser listeners
250d931ecc When URI cannot be resolved, the library is null.
2491767a33 Use correct CompilationUnitElement for annotations.
4ef18fdb96 Fix nameOffset for Export/ImportElement.
7873dbdc1d Fix for duplicate declarations.
38049f3cb6 [vm, interpreter] Handle implicit static getters as bytecode.
714a082a5d Minimal integration of summary2 into AnalysisDriver.
dd3530450d make "late" and "required" builtin keywords
836efd6520 Add a language_2 test for having an invalid type in an on clause
81e554ea43 parse "required" modifier for NNBD
1eab04ed3f Reland "[VM-debugger] resolve column breakpoint tokenposition into a single value"
ec27b09e68 [vm, service] Fix deferral of service extension invocation to not be mislead by other OOB messages.
1e30bb90dc [vm/dbc] Support unboxed Int64 on DBC

https://skia.googlesource.com/skia.git/%2Blog/067861e14821..9b67802a4cd0

git log 067861e1482118dd7071c931a90127c5ca0c9b21..9b67802a4cd01fbbe5fcbe9f4117ff68e7b8e751 --date=short --no-merges --format=%ad %ae %s
2019-04-19 martin@mainframe.co.uk Properly retrieve memory block in SkTextUtils
2019-04-18 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-04-18 halcanary@google.com SkPDF: move type1 font code into single file
2019-04-18 csmartdalton@google.com Swap front and back stencil sides when rendering bottom-left
2019-04-18 bsalomon@google.com Swap x/y radii for EllipticalRRectOp depending on matrix.
2019-04-18 halcanary@google.com SkQP: consolidate cut_release scripts

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Fixes https://github.com/flutter/flutter/issues/26782.

The raw pointer isn't a reliable id as the allocator can reuse an
address that's just been released for another layer.

This will fix Fuchsia bug FL-216.

This problem was not affecting non-Fuchsia Flutter probably because
non-Fuchsia Flutter purges the raster cache key much more frequently so
we won't see a key collision. In Fuchsia, as the key has to wait for the
Vulkan surface to render asynchronously, this suddenly becomes an issue.

https://skia.googlesource.com/skia.git/%2Blog/2c2240f66805..067861e14821

git log 2c2240f66805ac852507f7eea010c153b42485e3..067861e1482118dd7071c931a90127c5ca0c9b21 --date=short --no-merges --format=%ad %ae %s
2019-04-18 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-04-18 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-04-18 reed@google.com remove experimental from some APIs (that are no longer experiments)
2019-04-18 michaelludwig@google.com Fix quad type detection from SkPoint array
2019-04-18 brianosman@google.com Remove the axis-aligned vector special case to convexity checker
2019-04-18 ethannicholas@google.com fixed assertion failure in skslc SPIR-V output

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`//flutter/runtime: runtime_lifecycle_unittests` was added because the these assumed that there was no VM already running in the process. Running other tests in the base target would mess up that assumption. Now that all test targets have been updated to make sure the VM instance does not leak, the tests in this target can be merged.

LUCI bots don’t need to be patched as these tests were only ever run on the trybots.

Reland "Add a unit test for PhysicalShapeLayer (#8616)"

This reverts commit 91b71070.

The only change is the namespace.

currentLineWidth is the width passed into Paragraph layout, which comes
from the maxIntrinsicWidth returned by a previous call to Paragraph layout.
That width is calculated by Layout::measureText.

postBreak is calculated from the character widths in the LineBreaker.

A slight mismatch between these two widths may unnecessarily cause the
insertion of desperate breaks in addWordBreak.  Adding some slack to
currentLineWidth works around this.

Fixes https://github.com/flutter/flutter/issues/30347

https://skia.googlesource.com/skia.git/%2Blog/a94670bd08cd..2c2240f66805

git log a94670bd08cd52a19bf72223d63e2cc808b6b057..2c2240f66805ac852507f7eea010c153b42485e3 --date=short --no-merges --format=%ad %ae %s
2019-04-17 bungeman@google.com Make more SkTypeface virtuals pure.
2019-04-18 borenet@google.com [infra] Fixes for chrome_release_branch

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Calculate and expose paragraph tightWidth to the framework to allow drawing Text based on this.

Fix a bug that caused jumping and flashing when entering tab characters into a TextField.

https://skia.googlesource.com/skia.git/%2Blog/847d55be4e62..a94670bd08cd

git log 847d55be4e6273fc3cd9c0b30c7bfc8a2d6575b7..a94670bd08cd52a19bf72223d63e2cc808b6b057 --date=short --no-merges --format=%ad %ae %s
2019-04-18 hcm@google.com Update Skia milestone to 76

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https://skia.googlesource.com/skia.git/%2Blog/ced2b79d00f9..847d55be4e62

git log ced2b79d00f9370cbd874d1462757b554655648f..847d55be4e6273fc3cd9c0b30c7bfc8a2d6575b7 --date=short --no-merges --format=%ad %ae %s
2019-04-18 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset
2019-04-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 c832cdd75f75..82bcffa78747 (7 commits)
2019-04-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 84c3a94e1450..abaecd5f2ba7 (6 commits)

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https://skia.googlesource.com/skia.git/%2Blog/14c90c1ca218..ced2b79d00f9

git log 14c90c1ca218428418b82be5684bb71f13e81f60..ced2b79d00f9370cbd874d1462757b554655648f --date=short --no-merges --format=%ad %ae %s
2019-04-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src a3585f70a100..f968f64cdf27 (436 commits)

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Almost all of the python build files in the flutter project work if
`python` is `python2` or `python3`. This is the only area where print is
incorrectly used (for `python3`).

Related issue: https://fuchsia-review.googlesource.com/c/fuchsia/+/272925

The failing tests were depending on the old assumption that the VM would never
shutdown.

This reverts commit 8b667b01.

An unnecessary PrerollContext copy is also removed. The added unit test will catch the error if we forget to subtract the elevation after the copy removal.

This change has been tested with the framework (`flutter test --local-engine=host_debug_unopt`).

Assert that all VM launches in the process have the same opinion on whether the VM should be leaked in the process. (#8622)

There is a possibility for a VM launch to not have a requisite shutdown if a previous launch asked to leak the VM instance in the process. Embedders have to ensure (via their Embedding APIs) that all instances of VM launch use consistent settings.