Roll src/third_party/skia/ 6ac97b7eb..0fcfb7525 (11 commits).
Roll src/third_party/skia/ 6ac97b7eb..0fcfb7525 (11 commits).

https://chromium.googlesource.com/skia.git/+log/6ac97b7eb99c..0fcfb7525f60

$ git log 6ac97b7eb..0fcfb7525 --date=short --no-merges --format='%ad %ae %s'
2016-03-09 jvanverth Fix some issues for Linux Vulkan build
2016-03-09 bsalomon Reenable dev bounds clip reduction
2016-03-09 bsalomon Fix nullptr access in GrTextureProvider::createMipMappedTexture
2016-03-09 reed partial switch over to sp usage of shaders
2016-03-09 robertphillips Revert of don't create zero length intervals (patchset #1 id:1 of https://codereview.chromium.org/1766243004/ )
2016-03-09 halcanary SkPDF: use sk_ref_sp
2016-03-09 bungeman Add SkDrawPosTextHCommand JSON, fix skiaserve build.
2016-03-09 msarett Deprecate SkImageDecoder
2016-03-09 bsalomon Don't allow nullptr in texels array params (unless using a transfer buffer).
2016-03-09 msarett Remove usage of SkImageDecoder in debugger
2016-03-09 caryclark don't create zero length intervals

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

Review URL: https://codereview.chromium.org/1782503002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#380218}

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