Roll src/third_party/skia/ c896eddc1..09757b29f (4 commits)

https://skia.googlesource.com/skia.git/+log/c896eddc1cf7..09757b29feeb

$ git log c896eddc1..09757b29f --date=short --no-merges --format='%ad %ae %s'
2017-12-12 kjlubick Fuzz skpicture with ReadBuffer
2017-12-12 robertphillips Remove GrBackendObject from tests (except image_from_yuv_textures)
2017-12-12 angle-deps-roller Roll skia/third_party/externals/angle2/ 7f5c3eb76..3c613c0d7 (1 commit)
2017-12-11 halcanary dm: require tmpDir, reasonable defaults

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: I678b50b539327c401c4218ac2b31e7e5a4bd75f9
Reviewed-on: https://chromium-review.googlesource.com/822600Reviewed-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@{#523538}

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': 'c896eddc1cf77ffaaa0d0cb68caac7e251cdb727',
+  'skia_revision': '09757b29feeb1e7a4bc73dcf07c960e06f20cd66',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.