Roll src/third_party/skia/ 77dd6c28d..f53e6c912 (8 commits)

https://skia.googlesource.com/skia.git/+log/77dd6c28d090..f53e6c912dd4

$ git log 77dd6c28d..f53e6c912 --date=short --no-merges --format='%ad %ae %s'
2017-12-14 benjaminwagner Temporarily specify machine_type for Win GCE bots.
2017-12-14 djsollen Suppress warnings of unused variables.
2017-12-14 angle-deps-roller Roll skia/third_party/externals/angle2/ 9d4d7f06f..f15f9cec3 (1 commit)
2017-12-13 mtklein make SkColorSpace_New real
2017-12-14 jvanverth Send TextBlobCache purge messages only to owning cache.
2017-12-13 pirama Turn on PGO for skia_nanobench, skia_dm
2017-12-13 benjaminwagner Enable Goma fallback by default.
2017-12-13 benjaminwagner Switch Goma test jobs to ANGLE/Vulkan.

Created with:
  roll-dep src/third_party/skia


The AutoRoll server is located here: https://autoroll.skia.org

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.


CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=liyuqian@chromium.org

Change-Id: Idb48dd603d0ddb5bfd6129ed674b5d1a6a59811d
Reviewed-on: https://chromium-review.googlesource.com/827585Reviewed-by: Skia Deps Roller <skia-deps-roller@chromium.org>
Commit-Queue: Skia Deps Roller <skia-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524217}

DEPS

@@ -74,7 +74,7 @@ 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': '77dd6c28d0903f953999bd55ddb6d3c00b50fd00',
+  'skia_revision': 'f53e6c912dd4c5bb4072a06fc332b466b85379cc',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.