Roll src/third_party/skia 776a411b5267..a7914d3a8e3b (6 commits)

https://skia.googlesource.com/skia.git/+log/776a411b5267..a7914d3a8e3b


git log 776a411b5267..a7914d3a8e3b --date=short --no-merges --format='%ad %ae %s'
2018-09-14 michaelludwig@google.com Implement textured gradients
2018-09-14 csmartdalton@google.com ccpr: Remove the dangling pointer from GrCCDrawPathsOp
2018-09-14 robertphillips@google.com Harden SerializedImageFilter fuzzer against filter creation failure
2018-09-14 robertphillips@google.com Preserve fLastMoveToIndex in SkPath::transform
2018-09-14 caryclark@skia.org fix error reporting for doc examples
2018-09-14 michaelludwig@google.com Implement dual interval gradients


Created with:
  gclient setdep -r src/third_party/skia@a7914d3a8e3b

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-autoroll

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;luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
TBR=caryclark@chromium.org

Change-Id: I7d0ec294f34b7e529cc1623651a44312662caf88
Reviewed-on: https://chromium-review.googlesource.com/1226387Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#591475}

DEPS

@@ -105,7 +105,7 @@ 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': '776a411b526770401ed5e72a6c4129e06b76b530',
+  'skia_revision': 'a7914d3a8e3b3256e8465dd5e0e98500cfbb3053',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.