Roll chromium 282879:285412.

Pick up the libvpx roll:
https://codereview.chromium.org/401983003/

R=marpan@google.com
TBR=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/21959005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6784 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/DEPS b/DEPS
index e9ec58d..0b3aecc 100644
--- a/DEPS
+++ b/DEPS
@@ -11,7 +11,7 @@
   "googlecode_url": "http://%s.googlecode.com/svn",
   "sourceforge_url": "http://svn.code.sf.net/p/%(repo)s/code",
   "chromium_trunk" : "http://src.chromium.org/svn/trunk",
-  "chromium_revision": "282879",
+  "chromium_revision": "285412",
 
   # A small subset of WebKit is needed for the Android Python test framework.
   "webkit_trunk": "http://src.chromium.org/blink/trunk",