Roll src/third_party/skia/ d316e77c1..65115a1b1 (1 commit).

https://skia.googlesource.com/skia.git/+log/d316e77c1e19..65115a1b1a5c

$ git log d316e77c1..65115a1b1 --date=short --no-merges --format='%ad %ae %s'
2016-12-13 robertphillips Remove mutex guards from GrContext::readSurfacePixels

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
TBR=msarett@google.com

Review-Url: https://codereview.chromium.org/2578523002
Cr-Commit-Position: refs/heads/master@{#438510}

DEPS

@@ -40,7 +40,7 @@ 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': 'd316e77c1e1967b439a9a6c11146c54e367bff71',
+  'skia_revision': '65115a1b1a5c72b47492dc447d1d282353ae3121',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.