Add new mirror for AppRTC due to code move at GitHub.

build_apprtc_collider.py

 #!/usr/bin/python
 # Copyright 2014 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.
 
 """Builds the AppRTC collider using the golang toolchain.
 
 The golang toolchain is downloaded by download_golang.py. We use that here
 to build the AppRTC collider server.
 """
 
 import os
 import shutil
 import subprocess
 import sys
 
 import utils
 
 
 def main():
-  web_samples_dir = os.path.join('webrtc-samples', 'samples', 'web')
+  apprtc_dir = os.path.join('apprtc', 'src')
   golang_workspace = os.path.join('src', 'out', 'go-workspace')
   shutil.rmtree(golang_workspace, ignore_errors=True)
   golang_workspace_src = os.path.join(golang_workspace, 'src')
 
-  collider_dir = os.path.join(web_samples_dir, 'content', 'apprtc', 'collider')
+  collider_dir = os.path.join(apprtc_dir, 'collider')
   shutil.copytree(collider_dir, golang_workspace_src,
                   ignore=shutil.ignore_patterns('.svn', '.git'))
 
   golang_binary = 'go%s' % ('.exe' if utils.GetPlatform() == 'win' else '')
   golang_path = os.path.join('go', 'bin', golang_binary)
 
   golang_env = os.environ.copy()
   golang_env['GOROOT'] = os.path.abspath('go')
   golang_env['GOPATH'] = os.path.abspath(golang_workspace)
   golang_env['PATH'] += os.pathsep + os.path.abspath('mercurial')
   subprocess.check_call([golang_path, 'get', 'collidermain'],
                         env=golang_env)
   subprocess.check_call([golang_path, 'build', 'collidermain'],
                         env=golang_env)
 
 if __name__ == '__main__':
   sys.exit(main())