Download a prebuilt apprtc from google storage instead of building it.

download_apprtc_appengine_and_mercurial.py

 #!/usr/bin/python
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Downloads the appengine SDK from WebRTC storage and unpacks it.
 
 Requires that depot_tools is installed and in the PATH. This script expects
 to run with Chrome's base dir as the working directory, e.g. where the .gclient
 file is. This is what should happen if this script is invoked as a hook action.
@@ skipping 26 matching lines @@
   if len(argv) == 1:
     return 'Usage: %s <path to webrtc.DEPS>' % argv[0]
 
   webrtc_deps_path = argv[1]
   appengine_zip_path = os.path.join(webrtc_deps_path, 'google-appengine.zip')
   old_appengine_sha1 = utils.ComputeSHA1(appengine_zip_path)
 
   mercurial_tar_path = os.path.join(webrtc_deps_path, 'mercurial-src.tar.gz')
   old_mercurial_sha1 = utils.ComputeSHA1(mercurial_tar_path)
 
+  apprtc_zip_path = os.path.join(webrtc_deps_path, 'prebuilt_apprtc.zip')
+  old_apprtc_sha1 = utils.ComputeSHA1(mercurial_tar_path)
+
   _DownloadResources(webrtc_deps_path)
 
   if old_appengine_sha1 != utils.ComputeSHA1(appengine_zip_path):
     utils.DeleteDirNextToGclient('google_appengine')
     utils.UnpackToWorkingDir(appengine_zip_path)
 
   if old_mercurial_sha1 != utils.ComputeSHA1(mercurial_tar_path):
     utils.DeleteDirNextToGclient('mercurial')
     utils.UnpackToWorkingDir(mercurial_tar_path)
     _StripVersionNumberFromMercurialFolder()
 
+  if old_apprtc_sha1 != utils.ComputeSHA1(apprtc_zip_path):
+    utils.DeleteDirNextToGclient('apprtc')
+    utils.UnpackToWorkingDir(apprtc_zip_path)
+
 if __name__ == '__main__':
   sys.exit(main(sys.argv))