Add test to verify we can cancel the GetUserMedia request right after sending the request

chrome/test/functional/webrtc_call.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 os
 import subprocess
 import time
 import unittest
 
@@ skipping 126 matching lines @@
     self._Connect("user_1", tab_index=0)
     self._Connect("user_2", tab_index=1)
 
     self._EstablishCall(from_tab_with_index=0)
 
     self.assertEquals('failed-with-error-1',
                       self._GetUserMedia(tab_index=0, action='deny'))
     self.assertEquals('failed-with-error-1',
                       self._GetUserMedia(tab_index=0, action='dismiss'))
 
+  def testReloadPageAfterGetUserMedia(self):
+    """Ensures no crash on a quick reaload after GetUserMedia.
+
+    This test will quickly reload the page after running getUserMedia, which
+    will remove the pending request. This crashed the browser before the fix
+    for crbug.com/135043.
+    """
+
+    url = self.GetFileURLForDataPath('webrtc', 'webrtc_jsep_test.html')
+    self.NavigateToURL(url)
+    self.AppendTab(pyauto.GURL(url))
+    self.assertEquals('ok-requested', self.ExecuteJavascript(
+        'getUserMedia(true, true)', tab_index=0))
+    self.assertEquals('ok-reloaded-page', self.ExecuteJavascript(

[Nirnimesh, 2012/07/12 14:07:01]

You don't need javascript to reload the page. You can make direct pyauto calls.
See navigation.py for examples.

+        'ReloadWebPage()', tab_index=0))
+
   def _GetUserMedia(self, tab_index, action='allow'):
     """Acquires webcam or mic for one tab and returns the result."""
     self.assertEquals('ok-requested', self.ExecuteJavascript(
         'getUserMedia(true, true)', tab_index=tab_index))
 
     self.WaitForInfobarCount(1, tab_index=tab_index)
     self.PerformActionOnInfobar(action, infobar_index=0, tab_index=tab_index)
     self._WaitForGetUserMediaResult(tab_index=0)
 
     result = self._GetUserMediaResult(tab_index=0)
@@ skipping 51 matching lines @@
     self.assertTrue(video_playing,
                     msg='Timed out while trying to detect video.')
 
   def _AssertNoFailures(self, tab_index):
     self.assertEquals('ok-no-errors', self.ExecuteJavascript(
         'getAnyTestFailures()', tab_index=tab_index))
 
 
 if __name__ == '__main__':
   pyauto_functional.Main()