Roll src/third_party/skia/ 240516f77..f6f7b67ac (9 commits)

https://skia.googlesource.com/skia.git/+log/240516f772ea..f6f7b67ac230

$ git log 240516f77..f6f7b67ac --date=short --no-merges --format='%ad %ae %s'
2018-02-15 egdaniel When creating emptyp MipMap proxies, don't instantiate them immediately. Attempt 3
2018-02-14 csmartdalton Drop unused shader support for sample variables
2018-02-15 brianosman Fix flicker when changing backend on Mac viewer
2018-02-15 reed use conservative bounds to disable clipping
2018-02-15 egdaniel Disable texstorage for BGRA on ES devices that aren't apple
2018-02-15 rmistry Test change
2018-02-15 reed use safe increment for edge walker
2018-02-15 skcms-skia-autoroll Roll skia/third_party/externals/skcms/ 0e69310d6..c42baa572 (1 commit)
2018-02-15 reed abort blur if the sigma is too small

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=caryclark@chromium.org

Change-Id: I4a2e6a058d9da115171d4f5835ff7fe2c8325e90
Reviewed-on: https://chromium-review.googlesource.com/922880Reviewed-by: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#537133}

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': '240516f772ea27e62f477ba510aabeb84b6f68d5',
+  'skia_revision': 'f6f7b67ac230b14a725fbdabe951c70ea5b4428f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.