Roll src/third_party/skia/ bef1adfb5..235269631 (4 commits).
Roll src/third_party/skia/ bef1adfb5..235269631 (4 commits).

https://chromium.googlesource.com/skia.git/+log/bef1adfb56cf..23526963135b

$ git log bef1adfb5..235269631 --date=short --no-merges --format='%ad %ae %s'
2016-02-01 xidachen Replace the id<-->key hashmap in SkImageFilter by a SkTArray
2016-02-01 robertphillips Move SkPixelXorXfermode.h to include/client/android
2016-02-01 fmalita Fix S32_D32_constX_shaderproc assert
2016-02-01 caryclark batch merge new edges

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

Review URL: https://codereview.chromium.org/1654823002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#372661}

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