Roll src/third_party/skia/ 7ea33f5e1..593192299 (1 commit).

https://chromium.googlesource.com/skia.git/+log/7ea33f5e1ae9..5931922997b8

$ git log 7ea33f5e1..593192299 --date=short --no-merges --format='%ad %ae %s'
2015-11-22 kkinnunen Remove GrContextFactory::getGLContext

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

Review URL: https://codereview.chromium.org/1466223002

Cr-Commit-Position: refs/heads/master@{#361081}

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': '7ea33f5e1ae9eb1fb1e7377d6edf6acdcf71d103',
+  'skia_revision': '5931922997b8904b1243240120014c016064b9fa',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.