Roll Skia DEPS to r6630

control: https://codereview.chromium.org/11419241/
Review URL: https://codereview.chromium.org/11416276

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170448 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -29,7 +29,7 @@ vars = {
   "ffmpeg_hash": "82ae69cc47f25f9a59cf2ca8742e3391c34e7602",
 
   "sfntly_revision": "134",
-  "skia_revision": "6593",
+  "skia_revision": "6630",
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.

skia/skia.gyp

@@ -236,6 +236,7 @@
         'SK_DISABLE_DITHER_32BIT_GRADIENT',
 
         'SK_DISABLE_DASHING_OPTIMIZATION',
+        'SK_DISABLE_SEPARABLE_MASK_BLUR',
       ],
       'sources!': [
         '../third_party/skia/include/core/SkTypes.h',