DEPS: Specify WebRTC hooks and add a few dependencies

sync_chromium.py

 #!/usr/bin/env python
 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """Script to download a Chromium checkout into the workspace.
@@ skipping 97 matching lines @@
   # https://codereview.chromium.org/1155743013
   # TODO(kjellander): Remove this after the summer of 2015.
   freetype_src = os.path.join(CR_DIR, 'src', 'third_party', 'freetype-android',
                               'src')
   if os.path.isdir(freetype_src):
     shutil.rmtree(freetype_src)
 
   # Avoid downloading NaCl toolchain as part of the Chromium hooks.
   gclient_cmd = 'gclient.bat' if sys.platform.startswith('win') else 'gclient'
   args = [
-      gclient_cmd, 'sync', '--force', '--revision', 'src@'+opts.target_revision
+      gclient_cmd, 'sync', '--force', '--nohooks', '--revision',
+      'src@' + opts.target_revision
   ]
 
   if os.environ.get('CHROME_HEADLESS') == '1':
     # Running on a buildbot.
     args.append('-vvv')
 
     if sys.platform.startswith('win'):
       cache_path = os.path.join(os.path.splitdrive(ROOT_DIR)[0] + os.path.sep,
                                 'b', 'git-cache')
     else:
@@ skipping 52 matching lines @@
   ret = subprocess.call(args, cwd=opts.chromium_dir)
   if ret == 0:
     with open(flag_file, 'wb') as f:
       f.write(flag_file_content)
 
   return ret
 
 
 if __name__ == '__main__':
   sys.exit(main())