Roll src/third_party/skia/ 0a0605d4d..0f6cca8a2 (10 commits).

https://chromium.googlesource.com/skia.git/+log/0a0605d4de31..0f6cca8a2070

$ git log 0a0605d4d..0f6cca8a2 --date=short --no-merges --format='%ad %ae %s'
2015-11-24 cdalton Optimize visualbench offscreen blits
2015-11-24 herb Change XPS to use find and place glyph.
2015-11-24 robertphillips Sniff out rects, ovals & rrects in SkGpuDevice::drawPath
2015-11-24 kkinnunen Generate list of GPU contexts outside ImageTest tests
2015-11-24 msarett Cherry pick one more commit into libjpeg-turbo
2015-11-24 robertphillips Upgrade debugger to print more SkPath info (isOval & isRRect)
2015-11-24 hendrikw skia: Holding onto the image in the benchmark causes issues
2015-11-24 robertphillips Clarify when oval & rrects get devolved to paths in SkGpuDevice/GrDrawContext boundary
2015-11-24 mtklein Add SK_BEGIN_REQUIRE_DENSE / SK_END_REQUIRE_DENSE.
2015-11-24 djsollen Whitespace change to trigger android automerger

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

Review URL: https://codereview.chromium.org/1469373002

Cr-Commit-Position: refs/heads/master@{#361387}

DEPS

@@ -39,7 +39,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '0a0605d4de319fa9f24f2fb239ae7ea039d9fd02',
+  'skia_revision': '0f6cca8a2070b974368652ec04b6003e9205a8a3',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.