Roll src/third_party/skia/ a0985d960..ea6138253 (8 commits)

https://skia.googlesource.com/skia.git/+log/a0985d960fb7..ea6138253bda

$ git log a0985d960..ea6138253 --date=short --no-merges --format='%ad %ae %s'
2017-12-04 kjlubick Add additional dimension for Valgrind bots
2017-12-04 kjlubick Add 2 bots to CQ
2017-12-04 bsalomon Avoid coverage aa for filled drrects when using msaa.
2017-12-04 robertphillips Revert "Add unit test for SkDeferredDisplayLists"
2017-12-01 csmartdalton Fix setjmp/longjump usage in JPEG error handling
2017-12-04 robertphillips Add unit test for SkDeferredDisplayLists
2017-12-04 bsalomon Disable SkImage multitexturing for AMD GPUs.
2017-12-04 robertphillips Revert "Revert "Enable explicit GPU resource allocation""

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=rmistry@chromium.org

Change-Id: I09442e157f6f1bfdca2d1c95699ffd7cde62d584
Reviewed-on: https://chromium-review.googlesource.com/806419Reviewed-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@{#521372}

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': 'a0985d960fb7c2010274a0fb4a8aa771ece6dc1f',
+  'skia_revision': 'ea6138253bda6edef21c3a51d47f893c79f29ef8',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.