Revert "Roll src/third_party/skia/ c4176a2fa..46b654df9 (6 commits)"

This reverts commit 05d4aefd.

Reason for revert: https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Builder%20%28dbg%29/builds/89457

Original change's description:
> Roll src/third_party/skia/ c4176a2fa..46b654df9 (6 commits)
> 
> https://skia.googlesource.com/skia.git/+log/c4176a2fa5aa..46b654df9e70
> 
> $ git log c4176a2fa..46b654df9 --date=short --no-merges --format='%ad %ae %s'
> 2017-07-11 ethannicholas converted GrSimpleTextureEffect to sksl
> 2017-07-12 reed remove unreachable perspective code for imageshader
> 2017-07-11 liyuqian Always enable Analytic AA for rects
> 2017-07-11 bsalomon Make SmallPathOp a non-legacy GrMeshDrawOp
> 2017-07-12 robertphillips Address ASAN complaint
> 2017-07-11 robertphillips Plumb raw GrMipLevel* down instead of SkTArray<GrMipLevel> in GrGpu
> 
> Created with:
>   roll-dep src/third_party/skia
> 
> 
> 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=ethannicholas@chromium.org
> 
> Change-Id: Iaa9f8d51a32084c0449c65b80ca70b9c7e9635f5
> Reviewed-on: https://chromium-review.googlesource.com/568220
> Reviewed-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@{#485962}

TBR=skia-deps-roller@chromium.org,ethannicholas@chromium.org

Change-Id: I5f8e6f95396c3e8f5258c23deb3edf076ae4e352
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
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
Reviewed-on: https://chromium-review.googlesource.com/568439Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#485993}

DEPS

@@ -40,7 +40,7 @@ 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': '46b654df9e70bbfacf6dc45d3a2a7ceb13a61edb',
+  'skia_revision': 'c4176a2fa5aab30e5886f05bbe20de225dbe997b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.