Roll src/third_party/skia/ cf79ee562..477d0efcf (7 commits)

https://skia.googlesource.com/skia.git/+log/cf79ee5626dd..477d0efcf2d9

$ git log cf79ee562..477d0efcf --date=short --no-merges --format='%ad %ae %s'
2017-07-14 bsalomon Make ops in bezier_effects GMs be non-Legacy GrMeshDrawOps
2017-07-14 liyuqian Remove SK_SUPPORT_LEGACY_RECT flag
2017-07-14 ethannicholas fixed sksl static ifs to work for CircleEffect
2017-07-13 bsalomon Make ops used in OnFlushCallbackTest be non-legacy GrMeshDrawOps.
2017-07-13 fmalita Purge cached SkPictureShader entries on shader deletion
2017-07-13 egdaniel Add metal config to tools
2017-07-14 bsalomon init GrDrawAtlasOp::fColor

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: If0d3a27e0068100aae09c4d6e3e0b0b3bc5198c6
Reviewed-on: https://chromium-review.googlesource.com/571509Reviewed-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@{#486778}

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': 'cf79ee5626ddf9c5fb5315a560d10c25f4270c6f',
+  'skia_revision': '477d0efcf2d90c70a87c5a126349e76ac57d9649',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.