Roll libvpx to include +x permissions for .sh files.

BUG=115859
TEST=None


Review URL: http://codereview.chromium.org/9481016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@123950 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/DEPS b/DEPS
index 5f015f2..4c8baae 100644
--- a/DEPS
+++ b/DEPS
@@ -39,7 +39,7 @@
 
   "libjingle_revision": "117",
   "libphonenumber_revision": "425",
-  "libvpx_revision": "122996",
+  "libvpx_revision": "123809",
   "lss_revision": "9",
   "ffmpeg_revision": "122092",
   "sfntly_revision": "118",