Roll src/third_party/skia/ 6404981b0..f267c1efe (5 commits).
Roll src/third_party/skia/ 6404981b0..f267c1efe (5 commits).

https://chromium.googlesource.com/skia.git/+log/6404981b0c39..f267c1efe7de

$ git log 6404981b0..f267c1efe --date=short --no-merges --format='%ad %ae %s'
2016-02-01 bsalomon Add ability to extract YUV planes from SkImage
2016-02-01 bsalomon Fix GL readback code to handle rowbytes correctly for non-32bit formats
2016-02-01 mtklein Look beyond SSE2 for Paeth
2016-02-01 bsalomon Move SkColorMatrixFilter implementation to core.
2016-02-01 ethannicholas added a default constructor for GrBatchToXPOverrides GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1657803002

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

Review URL: https://codereview.chromium.org/1658723006

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#372808}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk