Roll external/skia b7b2da871..436d47d5b (35 commits)

https://skia.googlesource.com/skia.git/+log/b7b2da871..436d47d5b

2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 1dc32aecaa61..cddf8925a8d8 (456 commits)
2019-03-01 halcanary@google.com SkQP: Fix report
2019-03-01 mtklein@google.com update high-contrast color filter for tagged SW destinations
2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader a1924739029e..dd1e37e31d68 (1 commits)
2019-03-01 ianloic@google.com Clean up SkFontMgr_fuchsia.cpp after FIDL API change
2019-03-01 reed@google.com fix docs for fitsInBytes
2019-03-01 kjlubick@google.com [canvaskit] Roll 0.4.1
2019-03-01 mtklein@google.com fix labels in P3 gm
2019-03-01 jvanverth@google.com Add GrMtlPipelineStateCache.
2019-03-01 fmalita@chromium.org [canvaskit] Ignore image paths in Skottie asset keys
2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 5546fb4fdd85..1581ff030b9c (2 commits)
2019-03-01 fmalita@chromium.org [canvaskit] Consolidate Skottie assets
2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 5de69e91bd93..5546fb4fdd85 (4 commits)
2019-02-28 csmartdalton@google.com Make GrMesh compatible with instanced draws that have no attribs
2019-02-28 reed@google.com Move responsibility to onMakeContext for device colorspace decision
2019-02-28 kjlubick@google.com [canvaskit] Add support for external fonts
2019-02-28 csmartdalton@google.com Revert "Drop unused shader support for sample variables"
2019-02-28 brianosman@google.com Particles: Removed emitters, added more full-featured position affectors
2019-02-28 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader c6eb41bebc27..a1924739029e (2 commits)
2019-02-28 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2019-02-28 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader bc63cf9c511b..c6eb41bebc27 (3 commits)
2019-02-28 jvanverth@google.com Fix a couple of Mac windowing issues.
2019-02-28 bsalomon@google.com Remove support for SkDeferredDisplayListRecorder::DelayReleaseCallback::kNo.
2019-02-28 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 201f136c9907..bc63cf9c511b (1 commits)
2019-02-28 thakis@chromium.org skia: Fix -Wextra-semi warnings in non-dcheck builds.
2019-02-28 michaelludwig@google.com Reland "Add general quad API to SkGpuDevice"
2019-02-28 brianosman@google.com Fix scaling error in SkLights::makeColorSpace
2019-02-28 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 61d99852c465..1dc32aecaa61 (2053 commits)
2019-02-28 benjaminwagner@google.com Remove OS condition from isolate files
2019-02-28 kjlubick@google.com [canvaskit][pathkit] Remove flaky/low-utility Debug tests
2019-02-28 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 4b314eefc839..5de69e91bd93 (1 commits)
2019-02-28 fmalita@chromium.org solink with --start-group/--end-group
2019-02-28 scroggo@google.com Enable Skia for Windows
2019-02-28 halcanary@google.com SkQP Documentation
2019-02-28 kjlubick@google.com [canvaskit] Support image assets for Skottie

The AutoRoll server is located here: https://autoroll-internal.skia.org/r/android-master-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.

Test: Presubmit checks will test this change.
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.

Test: mmma external/skia
Bug: 117921091, 123085931
Change-Id: I111d30ef6dbae7df461eac418ac26ac927e9b043