Roll src/third_party/skia 36c4fb3fa1bc..6f27489c6502 (3 commits)

https://skia.googlesource.com/skia.git/+log/36c4fb3fa1bc..6f27489c6502


git log 36c4fb3fa1bc..6f27489c6502 --date=short --no-merges --format='%ad %ae %s'
2018-12-18 herb@google.com Use SkFont for managing distance field text
2018-12-18 bsalomon@google.com Remove window rects flag from GrInternalSurfaceFlags.
2018-12-18 reed@google.com add regression test for stale fLastMoveToIndex


Created with:
  gclient setdep -r src/third_party/skia@6f27489c6502

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-blink-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

BUG=chromium:883596
TBR=halcanary@chromium.org

Change-Id: I153371f5fecf50c441c0076699a5dd24ab481369
Reviewed-on: https://chromium-review.googlesource.com/c/1382761
Reviewed-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@{#617620}