Roll src/third_party/skia 734b2a859784..6a4e60bb8f49 (4 commits)

https://skia.googlesource.com/skia.git/+log/734b2a859784..6a4e60bb8f49


git log 734b2a859784..6a4e60bb8f49 --date=short --no-merges --format='%ad %ae %s'
2018-07-24 robertphillips@google.com Revert "Reduce arbitrary opList splitting when sorting (take 2)"
2018-07-24 egdaniel@google.com Add Metal test bots.
2018-07-24 ethannicholas@google.com Revert "Revert "removed SkSLLayoutLexer""
2018-07-24 robertphillips@google.com Reduce arbitrary opList splitting when sorting (take 2)


Created with:
  gclient setdep -r src/third_party/skia@6a4e60bb8f49

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
TBR=benjaminwagner@chromium.org

Change-Id: I892ad89cf41a6ee9525774ce615b479a766eb701
Reviewed-on: https://chromium-review.googlesource.com/1147959Reviewed-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@{#577636}

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': '734b2a859784af0b16dbbe07570e6d2f5da34e76',
+  'skia_revision': '6a4e60bb8f49e4a031e8fc99c4d8edaa25b3619f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.