Roll src/third_party/skia/ 38d1adf1f..09f5cd44a (4 commits).

https://chromium.googlesource.com/skia.git/+log/38d1adf1f7f4..09f5cd44ae30

$ git log 38d1adf1f..09f5cd44a --date=short --no-merges --format='%ad %ae %s'
2016-06-06 scroggo Prefix png functions
2016-06-06 jvanverth Use intptr_t for onTouch argument.
2016-06-06 scroggo Update pnglibconf.h
2016-06-06 msarett Use SK_TEST_QCMS to mark qcms test code

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

Review-Url: https://codereview.chromium.org/2043643003
Cr-Commit-Position: refs/heads/master@{#398056}

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': '38d1adf1f7f482326d7047d52d56e65e9196482a',
+  'skia_revision': '09f5cd44ae30f7089cde0131a3d07abf4c47af67',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.