Roll src/third_party/skia/ 422310ddb..bf63e616a (2 commits).

https://chromium.googlesource.com/skia.git/+log/422310ddbe4d..bf63e616a67e

$ git log 422310ddb..bf63e616a --date=short --no-merges --format='%ad %ae %s'
2016-08-17 egdaniel Add mssa configs for vulkan, and simple bug fix
2016-08-17 caryclark fix fuzz

BUG=638496

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
TBR=robertphillips@google.com

Review-Url: https://codereview.chromium.org/2256673002
Cr-Commit-Position: refs/heads/master@{#412526}

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': '422310ddbe4db616200a949adcac2c560685030c',
+  'skia_revision': 'bf63e616a67e8992e150d982cfcd6403994f39ad',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.