Fixes https://github.com/flutter/flutter/issues/16635

See https://github.com/flutter/flutter/issues/16748
and https://github.com/flutter/flutter/issues/16456

https://skia.googlesource.com/skia.git/+log/c4e384e5ad85..3d0e8507face

$ git log c4e384e5a..3d0e8507f --date=short --no-merges --format='%ad %ae %s'
2018-04-20 robertphillips Prevent matrix stack from being corrupted if a rotated image filter is clipped out
2018-04-20 caryclark guard against NaN in path is rect
2018-04-19 fmalita Fix use-of-uninitialized-value in SkPictureShader::onMakeContext
2018-04-19 benjaminwagner Disable retries for Build, CT, and Calmbench tasks.
2018-04-20 angle-skia-autoroll Roll third_party/externals/angle2/ b0f917fa6..3ec304dba (1 commit)
2018-04-20 angle-skia-autoroll Roll third_party/externals/angle2/ e24032a2c..b0f917fa6 (3 commits)
2018-04-19 csmartdalton ccpr: Don't preempt the convex path renderer
2018-04-19 benjaminwagner Add more angle_gl_* configs for NVIDIA.
2018-04-19 jvanverth Remove ambient clamp hack for analytic shadows.
2018-04-19 brianosman Remove duplicate predefined configs
2018-04-18 csmartdalton ccpr: Clean up GrCCGeometry
2018-04-19 herb Adding pinning to the strike cache
2018-04-19 bsalomon Fix double counting of coverage in analytic round capped stroked circles.
2018-04-11 bungeman Document minimum OS requirements.
2018-04-19 angle-skia-autoroll Roll third_party/externals/angle2/ eeec3b14c..e24032a2c (2 commits)
2018-04-18 robertphillips rm SkRRectsGaussianEdgeMaskFilter
2018-04-19 borenet [skcms] Add version.sha1
2018-04-19 mtklein crash rather than overflow in SkTDArray

Created with:
  roll-dep src/third_party/skia

getBitmap had been doing FXL_CHECK assertions to check memory allocation
failures and other errors.  getBitmap will now return null to the caller
instead.
(The VM may throw OutOfMemoryError or other exceptions if JNI APIs fail)

Fixes https://github.com/flutter/flutter/issues/16750

This matches the behavior from before the shell refactoring.

Fixes https://github.com/flutter/flutter/issues/16754

AccessibilityBridge support for edge triggered semantics (iOS + Android) 

https://skia.googlesource.com/skia.git/+log/1ccaa6e05629..c4e384e5ad85

$ git log 1ccaa6e05..c4e384e5a --date=short --no-merges --format='%ad %ae %s'
2018-04-19 reed check if we fail to eval the conic in pathmeasure
2018-04-19 bungeman Remove unused parameters from internalGetPath.
2018-04-19 egdaniel When creating testing backendTexture take colorspace into account.
2018-04-19 kjlubick Fix Chromecast bots
2018-04-19 borenet [infra] gen_tasks: Pass internal hardware ID as a property
2018-04-18 herb Untangle strike cache and glyph cache
2018-04-19 mtklein disallow negative setReserve() calls
2018-04-19 mtklein rm SkTDArray::select()
2018-04-19 mtklein clean up setReserve() rule-bending
2018-04-18 scroggo Remove the limit on dng allocations
2018-04-19 scroggo Revert "Add stub gpu workaround generators"
2018-04-19 caryclark path is rect track corners
2018-04-17 borenet Reland "[infra] Run recipes through Kitchen"
2018-04-19 angle-skia-autoroll Roll third_party/externals/angle2/ aaa19de06..eeec3b14c (1 commit)
2018-04-18 angle-skia-autoroll Roll third_party/externals/angle2/ 5804dc8ea..aaa19de06 (9 commits)
2018-04-18 enne Add stub gpu workaround generators
2018-04-18 herb Move strike cache Find*() to strike cache
2018-04-18 liyuqian Remove SK_SUPPORT_LEGACY_PATH_DAA_BIT
2018-04-18 fmalita Prevent unnecessary/unbounded growth of SkTDynamicHash capacity
2018-04-18 bungeman DFT to draw A8 instead of incorrect vertical lcd.
2018-04-18 csmartdalton ccpr: Implement conics
2018-04-18 csmartdalton Always call endFlush on opLists that might survive a flush
2018-04-18 fmalita Convert A8 D32 mask blitters to Sk4px
2018-04-18 liyuqian Reland "Fix the fat rect bug in the threaded backend"
2018-04-18 halcanary SkQP: speed up tools/skqp/make_apk_list\
2018-04-18 brianosman Support all destination profiles in SkColorSpaceXform_skcms
2018-04-17 brianosman With ES3, enable both ES2 and ES3 external image extensions
2018-04-18 caryclark fix path is rect flaw exposed by gold

Created with:
  roll-dep src/third_party/skia

If the start/end range passed to GetRectsForRange includes lines of text
that did not render any glyphs, then GetRectsForRange should add a placeholder
for that line.  In particular, the framework expects this so that it can
position the cursor on an empty line when editing text.

Fixes https://github.com/flutter/flutter/issues/16418

The WeakPtrFactory must be deleted on the thread where it was created.
However, the service isolate is created and destroyed on threads from
the Dart thread pool, and the creating thread may not be the same as
the destroying thread.

Creating a dylib from a “complete” static library does not propagate symbol visisbility definitions. I also got rid of the static library and used a source set instead because we don’t need to do the extra work for other targets.

"flutter build bundle" in Dart 2 mode now builds an assets directory
containing the application and platform kernels along with the app's other
assets.

With this patch, embedders can run these bundles by setting
FlutterProjectArgs.assets_path to the bundle directory.  In this scenario,
FlutterProjectArgs.main_path and packages_path will be ignored.

https://skia.googlesource.com/skia.git/+log/1cd6098d52a5..1ccaa6e05629

$ git log 1cd6098d5..1ccaa6e05 --date=short --no-merges --format='%ad %ae %s'
2018-04-18 mtklein skcms→b4e167a stricter TF13 matching
2018-04-18 mtklein skcms→589b15b add skcms_EnsureUsableAsDestination
2018-04-18 angle-skia-autoroll Roll third_party/externals/angle2/ c90d4d38c..5804dc8ea (2 commits)
2018-04-18 herb Simplify strike cache Node
2018-04-18 egdaniel Remove persp_shader gms from DDL blacklist
2018-04-18 angle-skia-autoroll Roll third_party/externals/angle2/ aed1b56aa..c90d4d38c (2 commits)
2018-04-17 bungeman Remove text flag filtering from SkBitmapDevice.
2018-04-17 angle-skia-autoroll Roll third_party/externals/angle2/ 86de76b69..aed1b56aa (5 commits)
2018-04-17 reed show sum of cubic errors
2018-04-17 robertphillips Add handling to ViaDDL for images that are too large to be uploaded in one go
2018-04-17 herb Move node information to SkStrikeCache
2018-04-17 bungeman IWYU for some more test files starting with 'C'.
2018-04-17 reed detect if we made an infinite rect
2018-04-17 borenet [infra] Support recursive configs in builder_name_schema
2018-04-16 egdaniel No long require copy as draw for vulkan wrapped resources.
2018-04-17 caryclark path is rect diag test is required
2018-04-17 mtklein SkStrikeDifferences::operator() -> add()
2018-04-17 reed avoid overflow by using tmp 64bits
2018-04-17 brianosman Move external texture extension logic into SkSL
2018-04-17 benjaminwagner [infra] Add service account override in gen_tasks.go.

Created with:
  roll-dep src/third_party/skia

fe606f890b Revert [vm/compiler] Canonicalize more intermediate constants in IL.
54531ad4e7 Bring in the latest pub_semver
61b15fede8 [build] Remove unnecessary inputs from uses of application_snapshot.
9968728df1 Remove package:cli_util deps from package:analyzer.
0ca8b6e5be Improve recovery when "assert" is used in an expression
6de5da1f58 fix #32649, add an option to disable asserts in DDC/K
afbaf0c4a6 Add 'Extract Widget' to getAvailableRefactorings().
d4a1896cfb Demote IMPORT_DUPLICATED_LIBRARY_NAMED to a warning
f85480b4dd Add tests for CFE implementation of expression compilation.
a865531f57 Remove two unused classes from the public API
3b7199fe63 [standalone] Only allow one outstanding load when running with --deterministic.
35fecb4a10 Issue 32896. Add isXYZ accessors to ParameterElementForLink_VariableSetter.
8df94f34fd Improve fasta parser await-for statement recovery
dd897d35a2 Move the task API out of the public API
c32e0e4bf3 [vm] Clear trailing bytes of objects that end up in snapshot images.
3a5fcf5a87 Upgrade the dep on package:isolate.
973a1a0219 Remove uses of upper-case constants in remaining SDK code.
b3595d59b3 [VM] Revert small change in FlowGraphCompiler::EmitTestAndCallCheckCid
0cbd4b520a Address review comments from change 51120
5dd283e783 fix #32270, DDC tests can now work with preview-dart-2
ce2b0db370 Improve fasta parser "assert" recovery
f8f5365a94 [vm/compiler] Fix sorting of instructions stats.
30655dcea0 [vm/aot] Treat Endian.host as a compile time constant.
eeaea82b75 Update status on test that often times out
805c08d8bf Fix a run-time type issue when running in Dart 2 mode
b1bc4ed2b5 Handle as in nested const constructors
823dfda5a5 Delete serialization, except for equivalence and helpers used in other tests.
7383cd46e0 Fix for issue 32872
86ba29265a Clean up the use of deprecated API in the analyzer_plugin package
fbb60b786f Add generic bounds test to function_type_variable_test
fd5f998796 [vm] Delta-encode offsets into ROData.
6fe7a86e7f Replace SourceFactory.resolveUri() with resolveRelativeUri() in resynthesizer.
2fb94418cd Mark mirrors test crashing.
c2b338f1b7 Remove fuzzy arrow support from analyzer
9976cddcd7 Shared cache of FileState contents.
b52931ff30 Revert "[vm/kernel] Fix non-canoncialized type arguments in partial instantiation."
c214c43758 Make LineInfo a public class
bd12c869ae [vm/kernel] Fix non-canoncialized type arguments in partial instantiation.
51a2f96a71 Always call writeAnnotationList to write annotations.
974a8ee21d Fix crash in named function expression
988de9c925 Thread forest object through calls
51f9d243e7 [VM] Mark type as finalized before calling the Canonicalize() method
a8578eaf69 Clean up some imports in Fasta type inference
e9616da13e Cleanup TypeInfo
3b414a277c Reland "[VM] Introduction of type testing stubs - Part 1-4"
c5f69dff2d Include `call` on Closure in inference
826928e2ab Use _trust to test inference of --omit-implicit-checks
6802746ad7 Fixed a couple of typos in subtyping.md
782cfe04d1 fix #32756, DDC dynamic calls to generics will work with emit-metadata
8613938e33 fix DDK to track mock setters correctly.
92f1d0fab4 [gn] Allow single or double quotes in .config
e2ee654cd1 Make a method in MempryResourceProvider private
b0fafbd1f4 Clean up js_runtime parse/tryParse methods
5e1cb4d41b Make SourceRange part of analyzers public API
1ab4cee181 Add a benchmark for running flutter analyze --flutter-repo against flutter head.
ff24a5ee6b fasta: make strong-mode inference aware of the type of LoadLibrary and CheckLibraryIsLoaded
6d7df88fa3 Delay computing file name sets until they are requested.
b7cc1e7ce7 Fix stack overflow in RTI computation
6db4ea4ca5 [vm] Use unsigned varints when possible in the clustered snapshot.

This allows the texture registry to be accessed before render surface acquisition.

giving -C twice silently only builds one directory

Isolates may be launched and awaiting snapshot association. We don't
want to send such isolates any messages before their "main" method is
called. In such cases, the engine may intercept and store certain
launch specific information.

https://skia.googlesource.com/skia.git/+log/276886160ba9..1cd6098d52a5

$ git log 276886160..1cd6098d5 --date=short --no-merges --format='%ad %ae %s'
2018-04-17 caryclark path is rect bug number twelve
2018-04-17 bungeman Add paint flags to viewer GUI.
2018-04-17 mtklein skcms→3be11ac refactor a bit
2018-04-17 liyuqian Revert "Fix the fat rect bug in the threaded backend"
2018-04-17 reed only recheck fNeedsTiling if we computed fSrcBounds
2018-04-17 brianosman Add SkColorSpace::Make, taking an skcms_ICCProfile
2018-04-16 mtklein Reland "low-hanging bilerp_clamp_8888 wins"
2018-04-17 mtklein skcms→38f22d2 name types in skcms.h
2018-04-17 herb Reorganize strike cache and glyph cache code
2018-04-16 liyuqian Fix the fat rect bug in the threaded backend
2018-04-17 caryclark yet another path is rect exploit
2018-04-17 angle-skia-autoroll Roll third_party/externals/angle2/ 08b9e046c..86de76b69 (1 commit)
2018-04-16 halcanary SkColorSetARGB in constants
2018-04-16 caryclark a more involved path is rect bug
2018-04-16 egdaniel Update our config fallback switch in GrContext.
2018-04-17 borenet Revert "Reland "[infra] Run recipes through Kitchen""
2018-04-16 borenet Reland "[infra] Run recipes through Kitchen"
2018-04-17 angle-skia-autoroll Roll third_party/externals/angle2/ a4fa9c278..08b9e046c (6 commits)
2018-04-17 mtklein Revert "low-hanging bilerp_clamp_8888 wins"
2018-04-16 mtklein low-hanging bilerp_clamp_8888 wins
2018-04-16 csmartdalton Don't support GrCubicEffect if float != fp32
2018-04-13 bungeman Add pixel geometry and dft selection to viewer app.
2018-04-16 csmartdalton Revert "ccpr: Implement conics"
2018-04-16 csmartdalton ccpr: Implement conics
2018-04-16 reed show cubic error-vectors anchored on pt(s) of max deviation
2018-04-16 herb Rename SkGlyphCacheGlobals to SkStrikeCache
2018-04-16 csmartdalton Add glFlush workaround for instanced draws on Skylake
2018-04-13 bungeman Remove SkPaint::kGenA8FromLCD_Flag.
2018-04-16 kjlubick Fix many return-std-move-in-c++11 warnings
2018-04-16 fmalita Remove unused BW mask blitters
2018-04-16 mtklein disable -Wself-assign in Google3
2018-04-16 mtklein skcms→2667f0a Add skcms_BestSingleCurve utility
2018-04-16 reed optimize fast/simple case in raster tiling
2018-04-13 liyuqian Simplify the operation on atomic fIsFinishing
2018-04-13 liyuqian Let SkCoverageDeltaList store width and use it during blitting
2018-04-11 liyuqian SkBlitter is not thread safe; make one for each thread.
2018-04-12 liyuqian Snap the bitmap as it may be changed later
2018-04-16 halcanary SkPDF: use std::aligned_storage for typed union
2018-04-16 rmistry Some Chromium bots have been LUCIfied
2018-04-16 angle-skia-autoroll Roll third_party/externals/angle2/ 76b2c3852..a4fa9c278 (3 commits)
2018-04-16 egdaniel Don't allow ganesh to allocate mip maps for wrapped textures.
2018-04-10 bsalomon Draw stroked circles with round caps analytically.
2018-04-16 liyuqian Reland "Cumulate deltas even if they're out of the clip"
2018-04-16 caryclark document SkColor.h
2018-04-16 liyuqian Revert "Cumulate deltas even if they're out of the clip"
2018-04-15 csmartdalton ccpr: Normalize the cubic inflection function instead of its roots
2018-04-05 herb Remove all notion of transport from the API - V2.
2018-04-16 robertphillips Unblacklist fixed tests on DDL3 bots
2018-04-16 mtklein skcms→019d877 add a basic profiling mode to src/Transform.c
2018-04-16 bsalomon Make TestCase class in GrShapeTest heap allocate its GrShapes

Created with:
  roll-dep src/third_party/skia

This reverts commit 75851f08.

Adds the --verbose-logging flag to enable logging at all other severities.

* Make test Dart2 compliant

* Use service and debug events instead of polling to wait for isolate to start, run and resume.

* Refactor into _onServiceEvent. Wait for 'paused' event instead of 'isolate runnable'.

After we write the pixels in the correct format,
the color type of the SkPixmap is still set to
its previous value, so the existing assertion was
failing.