Roll src/third_party/skia/ 64bbad360..4c7e117b6 (1 commit).

https://chromium.googlesource.com/skia.git/+log/64bbad360f30..4c7e117b696b

$ git log 64bbad360..4c7e117b6 --date=short --no-merges --format='%ad %ae %s'
2016-07-14 robertphillips Remove dead flag from SkPictureRecorder

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

Review-Url: https://codereview.chromium.org/2154473002
Cr-Commit-Position: refs/heads/master@{#405588}

DEPS

@@ -36,7 +36,7 @@ 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': '64bbad360f30930befafee1bdefe4ad89f130dac',
+  'skia_revision': '4c7e117b696b67d45dc939e8b516f6ae18e68d1a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.