Roll src/third_party/skia 212aab0:94cf37f

Roll src/third_party/skia 212aab0:94cf37f

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/212aab0..94cf37f

CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
TBR=tomhudson@google.com
NOTRY=True
bot failure unrelated to CL

Commits in this roll:
94cf37f reed@chromium.org remove obsolete samples
94475cd halcanary@google.com sync-and-gyp: Update shell script to correct the syntax of functions
eddbefb hendrikw@chromium.org skia: Add ANGLE with GL backend to nanobench/DM
102081a joshualitt@chromium.org move GrGLPathProcessor back into GrPathProcessor
c4a83e2 reed@google.com support colortables in cacherator
d8dd47b joshualitt@chromium.org remove path specific program building classes

Review URL: https://codereview.chromium.org/1340823002

Cr-Commit-Position: refs/heads/master@{#348542}