Roll src/third_party/skia/ c5e4e7437..c86d0794e (4 commits)

https://skia.googlesource.com/skia.git/+log/c5e4e7437af9..c86d0794ed37

$ git log c5e4e7437..c86d0794e --date=short --no-merges --format='%ad %ae %s'
2017-09-18 reed Revert "try to remove google3 flag"
2017-09-18 reed try to remove google3 flag
2017-09-18 fmalita Revert "Reland "Fix SkImageSource::filterBounds()""
2017-09-18 angle-deps-roller Roll skia/third_party/externals/angle2/ f3d574545..10ce2d284 (1 commit)

Created with:
  roll-dep src/third_party/skia
BUG=None


Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls


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;master.tryserver.chromium.android:android_optional_gpu_tests_rel
TBR=fmalita@chromium.org

Change-Id: I4672a53c8fff4ff212db54191ba63d8f1158f817
Reviewed-on: https://chromium-review.googlesource.com/671653Reviewed-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@{#502738}

DEPS

@@ -41,7 +41,7 @@ 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': 'c5e4e7437af95ead91e5dc33e0bf1642cd2787df',
+  'skia_revision': 'c86d0794ed37c69dad8b967c53ebd8f504167e45',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.