Roll src/third_party/skia c594e6269813..b7c5bac9da28 (5 commits)

https://skia.googlesource.com/skia.git/+log/c594e6269813..b7c5bac9da28

git log c594e6269813..b7c5bac9da28 --date=short --no-merges --format='%ad %ae %s'
2019-10-15 jvanverth@google.com Remove some more MoltenVK support
2019-10-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll skia/third_party/skcms 8c5dee1e7fe2..8e28e18b5c9e (1 commits)
2019-10-15 csmartdalton@google.com Reland "ccpr: Unblacklist Qualcomm with msaa"
2019-10-15 egdaniel@google.com Remove some unneeded colortype format validation checks in ProxyProvider.
2019-10-15 csmartdalton@google.com Reland "Use GL_QCOM_TILED_RENDERING to explicitly discard stencil"

Created with:
  gclient setdep -r src/third_party/skia@b7c5bac9da28

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 csmartdalton@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
TBR=csmartdalton@google.com

Bug: chromium:None
Change-Id: I7140efc792695752f122e781c0f9e4749188a094
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1863124Reviewed-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@{#706188}

DEPS

@@ -167,7 +167,7 @@ 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': 'c594e62698138bb25baa5ac110e65b14b22dfbec',
+  'skia_revision': 'b7c5bac9da28a2a08b2f260bf467359ed075b583',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.