Roll src/third_party/skia/ b25c35224..779582280 (1 commit).

https://chromium.googlesource.com/skia.git/+log/b25c3522446c..779582280747

$ git log b25c35224..779582280 --date=short --no-merges --format='%ad %ae %s'
2016-10-04 liyuqian Implement AnalyticAA for convex shapes.

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

Review-Url: https://codereview.chromium.org/2392633003
Cr-Commit-Position: refs/heads/master@{#422870}

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': 'b25c3522446c9f84369dec2327ed9995fdb326de',
+  'skia_revision': '7795822807478143120c33228b68d2ab3918af2c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.