Roll src/third_party/skia eb1d5a2e233c..68626439f360 (19 commits)

https://skia.googlesource.com/skia.git/+log/eb1d5a2e233c..68626439f360

git log eb1d5a2e233c..68626439f360 --date=short --first-parent --format='%ad %ae %s'
2020-04-15 bsalomon@google.com Revert "GaussianConvolutionFragmentProcessor uses GrTextureEffect."
2020-04-15 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go Deps
2020-04-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 dee4d7a54e44..6e0d718a48d8 (10 commits)
2020-04-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 8ab26431..cddb357f (417 commits)
2020-04-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 711867566999..81e08df29531 (9 commits)
2020-04-15 mtklein@google.com clean up SK_SUPPORT_LEGACY_COLORFILTER_NO_SHADER
2020-04-15 herb@google.com Fix to change reject behavior back to original
2020-04-14 mtklein@google.com MSAN fix for interpreter
2020-04-14 bsalomon@google.com GaussianConvolutionFragmentProcessor uses GrTextureEffect.
2020-04-14 bsalomon@google.com Pass description of GrSurface to GrSurfaceProxy lazy callbacks.
2020-04-14 egdaniel@google.com Only call glFlush in submit when it is required.
2020-04-14 herb@google.com Remove scheduler instruction dump
2020-04-14 herb@google.com Instruction dumper with extra notations
2020-04-14 robertphillips@google.com Add render task type to flush-time op spew
2020-04-14 tdenniston@google.com [svg] Implement currentColor for gradient stops
2020-04-14 jvanverth@google.com Some D3D cleanup.
2020-04-14 reed@google.com SkCamera.h is deprecated
2020-04-14 ethannicholas@google.com Add sample(child, matrix) to SkSL.
2020-04-14 westont@google.com Move Pixelbook build jobs to Docker Debian9.

Created with:
  gclient setdep -r src/third_party/skia@68626439f360

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-autoroll
Please CC kjlubick@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

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-blink-rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Bug: chromium:1058517,chromium:1070474
Tbr: kjlubick@google.com
Change-Id: I30497f840a14e1f26c209889969d1f983e91a776
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2150606Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#759260}

DEPS

@@ -175,7 +175,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': 'eb1d5a2e233ccfa7d0f6e0ac7355bf4a17aff2d0',
+  'skia_revision': '68626439f3600d0f0b8459ed66f9484660afdeb8',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.