Roll src/third_party/skia/ 7d5105c4d..c60b310af (3 commits).
Roll src/third_party/skia/ 7d5105c4d..c60b310af (3 commits).

https://chromium.googlesource.com/skia.git/+log/7d5105c4d2a9..c60b310af763

$ git log 7d5105c4d..c60b310af --date=short --no-merges --format='%ad %ae %s'
2015-12-02 stephana Modify iOSShell-gyp to generate unique bundle identifier
2015-12-02 joshualitt Began logging more gpu stats from nanobench
2015-12-02 robertphillips Remove plumbing of clipRect thoughout the TextContexts

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

Review URL: https://codereview.chromium.org/1491063004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#362766}

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