Roll src/third_party/skia 4b3050b:846b022
Roll src/third_party/skia 4b3050b:846b022

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/4b3050b..846b022

CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
TBR=mtklein@google.com

Commits in this roll:
846b022 joshualitt@chromium.org Break LCD and Bitmap text dependency on hardcoded atlas values
1c005e4 scroggo@chromium.org Create a scanline decoder without creating a codec
ddc726f joshualitt@chromium.org Add cheat sheet to wrangler doc
dce5ce4 mtklein@chromium.org Port SkBlurImage opts to SkOpts.
562a66b mtklein@chromium.org Revert "Implement caching of filled paths in the tessellated path renderer." This reverts commit 468dfa72eb6694145487be17876804dfca3b7adb.
dea6e1c reed@google.com update image bench to test gpu and cpu images against raster surface
6f1216a reed@google.com cache private readback for gpu-images
fae0102 robertphillips@google.com Remove IGNORE_ROT_AA_RECT_OPT flag

Review URL: https://codereview.chromium.org/1261943003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#341789}

axinging/chromium-crosswalk,Just-D/chromium-1,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Just-D/chromium-1,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,Chilledheart/chromium,Chilledheart/chromium,Just-D/chromium-1,Chilledheart/chromium,axinging/chromium-crosswalk,Just-D/chromium-1,Just-D/chromium-1,Just-D/chromium-1,Chilledheart/chromium,Pluto-tv/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,Just-D/chromium-1,Chilledheart/chromium,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Just-D/chromium-1,Pluto-tv/chromium-crosswalk,Chilledheart/chromium,axinging/chromium-crosswalk,Chilledheart/chromium,Just-D/chromium-1,Chilledheart/chromium