Roll src/third_party/skia/ 33595bdf4..622c8d5de (4 commits).
Roll src/third_party/skia/ 33595bdf4..622c8d5de (4 commits).

https://chromium.googlesource.com/skia.git/+log/33595bdf4b64..622c8d5de12f

$ git log 33595bdf4..622c8d5de --date=short --no-merges --format='%ad %ae %s'
2016-05-10 brianosman Add flexible keybinding/command system to sk_app.
2016-05-10 jvanverth Set level count for wrapped backbuffer
2016-05-10 bsalomon Revert of Replace GrStrokeInfo with GrStyle. (patchset #4 id:160001 of https://codereview.chromium.org/1957363002/ )
2016-05-10 scroggo Run RAW images serially on Win8-MSVC-ShuttleB

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

Review-Url: https://codereview.chromium.org/1960393003
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#392610}

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