Adapted tests to API change.

chrome/test/functional/media_stream_infobar.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 import pyauto_functional
 import pyauto
 import webrtc_test_base
 
 
@@ skipping 52 matching lines @@
                       self._TestGetUserMedia(with_action='allow'))
     self.assertEquals('failed-with-error-1',
                       self._TestGetUserMedia(with_action='dismiss'))
 
   def _TestGetUserMedia(self, with_action):
     """Runs getUserMedia in the test page and returns the result."""
     url = self.GetFileURLForDataPath('webrtc', 'webrtc_jsep00_test.html')
     self.NavigateToURL(url)
 
     self.assertEquals('ok-requested', self.ExecuteJavascript(
-        'getUserMedia(true, true, {})'))
+        'getUserMedia(true, true, "{}")'))
 
     self.WaitForInfobarCount(1)
     self.PerformActionOnInfobar(with_action, infobar_index=0)
     self.WaitForGetUserMediaResult(tab_index=0)
 
     return self.GetUserMediaResult(tab_index=0)
 
 
 if __name__ == '__main__':
   pyauto_functional.Main()