Roll src/third_party/skia f3782fa:381b26f

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/f3782fa..381b26f

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

Commits in this roll:
381b26f joshualitt@chromium.org find image whenever we generateGlyph.  This should ensure the glyph is fully initialized before we start using the maskformat.
159fa57 caryclark@google.com linear gradient with stops discretized gm
6d901da egdaniel@google.com Move some parts of onReadPixels up to GrGpu readPixels.
b46e5e2 msarett@google.com Rename SkCodec_libbmp to SkBmpCodec
4358f13 scroggo@chromium.org Call notifyPixelsChanged after modifying bitmap

Review URL: https://codereview.chromium.org/1256823005

Cr-Commit-Position: refs/heads/master@{#341201}
1 file changed