Roll src/third_party/skia dc82994e3a76..472639d9f12f (6 commits)

https://skia.googlesource.com/skia.git/+log/dc82994e3a76..472639d9f12f


git log dc82994e3a76..472639d9f12f --date=short --no-merges --format='%ad %ae %s'
2018-10-24 reed@google.com add alignment and lcd to SkFont (for now)
2018-10-24 bsalomon@google.com Disable GrOp chaining.
2018-10-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 8a587714cb9f..805d7616a05e (1 commits)
2018-10-24 mtklein@google.com serious SkEdgeBuilder refactoring
2018-10-24 caryclark@skia.org fix fuzz divide by zero
2018-10-24 csmartdalton@google.com ccpr: Fix an overzealous assert in DDL


Created with:
  gclient setdep -r src/third_party/skia@472639d9f12f

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=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel

BUG=chromium:894015
TBR=brianosman@chromium.org

Change-Id: If6b9cf59ad133403e89dbafbd72fc29a0a7cf6f0
Reviewed-on: https://chromium-review.googlesource.com/c/1298069Reviewed-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@{#602369}

DEPS

@@ -111,7 +111,7 @@ 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': 'dc82994e3a76141cc037c92a644b7a6c54c87ad7',
+  'skia_revision': '472639d9f12f7e4034f7aedeb22f44405d0d5d23',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.