Roll src/third_party/skia/ 92f93799e..b915b978e (2 commits)

https://skia.googlesource.com/skia.git/+log/92f93799e8ae..b915b978e3c3

$ git log 92f93799e..b915b978e --date=short --no-merges --format='%ad %ae %s'
2018-02-05 reed move SkMask.h to src
2018-02-05 reed fix symbol for intersection

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=bsalomon@chromium.org

Change-Id: I49cdf111cafc6f80bee69146077a9bac460814c6
Reviewed-on: https://chromium-review.googlesource.com/902667Reviewed-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@{#534652}

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': '92f93799e8ae77cb80abd64ec804ea7797fdb460',
+  'skia_revision': 'b915b978e3c34e7ded50e1433cbc9e342bb71404',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.