Roll libvpx 269083:278497

Match Chromium libvpx roll to fix Android bots.

TBR=ajm@google.com

Review URL: https://webrtc-codereview.appspot.com/12829005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6521 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/DEPS b/DEPS
index f4beffd..5df8834 100644
--- a/DEPS
+++ b/DEPS
@@ -99,7 +99,7 @@
     From("chromium_deps", "src/third_party/libsrtp"),
 
   "third_party/libvpx":
-    Var("chromium_trunk") + "/deps/third_party/libvpx@269083",
+    Var("chromium_trunk") + "/deps/third_party/libvpx@278497",
 
   "third_party/libyuv":
     (Var("googlecode_url") % "libyuv") + "/trunk@1000",