Roll src/third_party/skia/ 8bac92800..461ef7af8 (17 commits)

https://skia.googlesource.com/skia.git/+log/8bac928009b8..461ef7af88cc

$ git log 8bac92800..461ef7af8 --date=short --no-merges --format='%ad %ae %s'
2018-03-07 fmalita Revert "add tiler for SkDraw"
2018-03-07 kjlubick Experiment with different settings for Pixel SKP bench
2018-03-07 angle-skia-autoroll Roll skia/third_party/externals/angle2/ 28060c436..7618eaf9a (3 commits)
2018-03-06 egdaniel Make GrReleaseProcHelper an SkWeakRefCnt
2018-03-07 angle-skia-autoroll Roll skia/third_party/externals/angle2/ d2cb7cec4..28060c436 (7 commits)
2018-03-06 amidlash [SkSVGDevice] Add support for image shaders.
2018-03-02 halcanary Viewer/Amdroid: universal build, resources in APK
2018-02-28 caryclark use safe math for growForRepeatedVerb
2018-03-06 herb Revert "Centralize mask byte calculations"
2018-03-06 brianosman Cleaning up SkColorSpaceXform a bit
2018-02-28 herb Centralize mask byte calculations
2018-03-06 reed add tiler for SkDraw
2018-03-06 mtklein support 888x, 1010102, and 101010x in SkPixmap::erase()
2018-03-06 robertphillips Add SkSurfaceCharacterization::createResized
2018-03-06 caryclark remove canvas internal private
2018-03-06 bungeman Add "--nonativeFonts" to public.bzl for running dm.
2018-03-06 angle-skia-autoroll Roll skia/third_party/externals/angle2/ e05ffdd19..d2cb7cec4 (1 commit)

Created with:
  roll-dep src/third_party/skia
BUG=803034


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=fmalita@chromium.org

Change-Id: I7928450c1eb8746b96ac4acd0f6b39b39d081f19
Reviewed-on: https://chromium-review.googlesource.com/952546
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@{#541439}

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': '8bac928009b8689f082e48ad5bc62f65297b894b',
+  'skia_revision': '461ef7af88cc966007c464130a971ec86c803f1d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.