Roll src/third_party/libvpx_new/source/libvpx/ dc9d36c0a..9645cd482 (11 commits).

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 169 matching lines @@
   'src/third_party/bidichecker':
     Var('chromium_git') + '/external/bidichecker/lib.git' + '@' + '97f2aa645b74c28c57eca56992235c79850fa9e0',
 
   'src/third_party/webgl/src':
    Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '421bc6095d1065bb6057e33fbab737b35d39930d',
 
   'src/third_party/webdriver/pylib':
     Var('chromium_git') + '/external/selenium/py.git' + '@' + '5fd78261a75fe08d27ca4835fb6c5ce4b42275bd',
 
   'src/third_party/libvpx_new/source/libvpx':
-   Var('chromium_git') + '/webm/libvpx.git' + '@' +  'dc9d36c0a6c749616d5543aa208864d7b0181fea',
+   Var('chromium_git') + '/webm/libvpx.git' + '@' +  '9645cd4826de5a469e163838b997fccfd7907b91',
 
   'src/third_party/ffmpeg':
    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + 'd2733b2c43f65f0e779d5d014777fb8ea1e89873',
 
   'src/third_party/libjingle/source/talk':
     Var('chromium_git') + '/external/webrtc/trunk/talk.git' + '@' + '1a5fe300d4f3522a5f35bd746f6a3a09f5e0a0c5', # commit position 10439
 
   'src/third_party/usrsctp/usrsctplib':
     Var('chromium_git') + '/external/usrsctplib.git' + '@' + '36444a999739e9e408f8f587cb4c3ffeef2e50ac', # from svn revision 9215
 
@@ skipping 618 matching lines @@
     'pattern': '.',
     'action': [
         'python',
         'src/tools/check_git_config.py',
         '--running-as-hook',
     ],
   },
 ]