Roll src/third_party/skia/ 308150821..0a5f99ccd (2 commits)

https://skia.googlesource.com/skia.git/+log/308150821517..0a5f99ccdfa6

$ git log 308150821..0a5f99ccd --date=short --no-merges --format='%ad %ae %s'
2018-02-09 reed can't cheat on contains due to underflow
2018-02-09 angle-skia-autoroll Roll skia/third_party/externals/angle2/ 3e520b6f4..6108b766b (4 commits)

Created with:
  roll-dep src/third_party/skia
BUG=810411


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=bsalomon@chromium.org

Change-Id: I30dd6ced4cc5d8519df8624b55b6a7171495e5d1
Reviewed-on: https://chromium-review.googlesource.com/912756
Commit-Queue: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#535952}

DEPS

@@ -79,7 +79,7 @@ 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': '308150821517a4dc73e43db1022d3e8bd589d2db',
+  'skia_revision': '0a5f99ccdfa6743e83a3c4a8952548fb07907a00',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.