Roll src/third_party/skia 146a4ba:c782b2a

Roll src/third_party/skia 146a4ba:c782b2a

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/146a4ba..c782b2a

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

Commits in this roll:
c782b2a herb@google.com Implement shared locks in the style of pthread's rwlock.
8cd8f94 borenet@google.com Add script for triggering Cluster Telemetry jobs using local scripts
823b2a7 mtklein@chromium.org SoftLight with SkPMFloat
b743c66 mtklein@chromium.org Edges matter, part 2.
218f21a caryclark@google.com don't fix winding for empty paths
f657b10 msarett@google.com Revert of Switch SkJpegCode to libjpeg-turbo (patchset #25 id:680001 of https://codereview.chromium.org/1180983002/)
f8bf918 msarett@google.com Add libjpeg-turbo library (depends on yasm) Mangle external function names to avoid conflict with libjpeg Take advantage of direct color conversion (RGBA, BGRA, 565) Prepare to use jpeg_skip_scanlines (when it is upstreamed)

Review URL: https://codereview.chromium.org/1221643006

Cr-Commit-Position: refs/heads/master@{#336667}