Roll Skia DEPS to r9048

R=bsalomon@google.com

Review URL: https://codereview.chromium.org/14876005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@198883 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -29,7 +29,7 @@ vars = {
   "ffmpeg_hash": "04db474e52bae0eef2cd22341aca1caf427411de",
 
   "sfntly_revision": "134",
-  "skia_revision": "9021",
+  "skia_revision": "9048",
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.