Roll src/third_party/skia d437c79ed036..6616efbdebd2 (4 commits)

https://skia.googlesource.com/skia.git/+log/d437c79ed036..6616efbdebd2


git log d437c79ed036..6616efbdebd2 --date=short --no-merges --format='%ad %ae %s'
2018-11-28 egdaniel@google.com In Vulkan, use 1000 for maxLod instead of maxMipLevel when using mips.
2018-11-28 borenet@google.com Use LUCI trybots in update_meta_config
2018-11-28 reed@google.com rm SK_SUPPORT_LEGACY_TEXTBLOBBUILD_WITH_PAINT from fluter
2018-11-28 reed@google.com rm SK_SUPPORT_LEGACY_NESTED_HINTINGENUM from flutter


Created with:
  gclient setdep -r src/third_party/skia@6616efbdebd2

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
TBR=borenet@chromium.org

Change-Id: I0a97627da750bf829da129f425264f4a25ee5ac2
Reviewed-on: https://chromium-review.googlesource.com/c/1352803
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@{#611761}