Roll src/third_party/skia 8afa86c63713..734b2a859784 (7 commits)

https://skia.googlesource.com/skia.git/+log/8afa86c63713..734b2a859784


git log 8afa86c63713..734b2a859784 --date=short --no-merges --format='%ad %ae %s'
2018-07-24 ethannicholas@google.com Revert "removed SkSLLayoutLexer"
2018-07-24 herb@google.com Clean up bitmap path
2018-07-24 egdaniel@google.com Add new vulkan headers to third_party/vulkan.
2018-07-24 jvanverth@google.com Some more SkPolyUtils optimizations and clean up.
2018-07-24 ethannicholas@google.com removed SkSLLayoutLexer
2018-07-24 robertphillips@google.com Address fuzzer issue
2018-07-24 caryclark@skia.org fix bookmaker bot


Created with:
  gclient setdep -r src/third_party/skia@734b2a859784

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;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

BUG=chromium:866775
TBR=benjaminwagner@chromium.org

Change-Id: I72064c967a9348238014399d855b79c164b6d713
Reviewed-on: https://chromium-review.googlesource.com/1147910Reviewed-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@{#577584}

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': '8afa86c63713e3f93e81df5bb60ddfe06ca06766',
+  'skia_revision': '734b2a859784af0b16dbbe07570e6d2f5da34e76',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.