Roll src/third_party/skia 98ed7b6:013e9e3

Roll src/third_party/skia 98ed7b6:013e9e3

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/98ed7b6..013e9e3

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

Commits in this roll:
013e9e3 reed@google.com move SkBitmapProvider to its own file
0d705a4 bsalomon@google.com Fix vs2015 build
0a5fa48 ericrk@chromium.org Add onMemoryDump to GrContext
eb00eab joshualitt@chromium.org fix up GrGLProgrambuilder precision on varyings
caf2df8 hendrikw@chromium.org skia: ANGLE roll
7a4d847 reed@google.com use SkBitmapProvider for shader-context
ca6f43b mtklein@chromium.org vb: also thread --key through to .json
27b6335 egdaniel@google.com On gpu, use max(r,g,b) for coverage alpha in LCD and update lcd blend gm.
fb1e2fc jvanverth@google.com Update params to get better packing for DF path atlas
435657f halcanary@google.com Forward declare SkStrokeRec in SkPathEffect

Review URL: https://codereview.chromium.org/1341403002

Cr-Commit-Position: refs/heads/master@{#349027}