Added code so renderer would cleanly exit.

chrome/test/functional/test_clean_exit.py

Index: chrome/test/functional/test_clean_exit.py
diff --git a/chrome/test/functional/test_clean_exit.py b/chrome/test/functional/test_clean_exit.py
new file mode 100755
index 0000000000000000000000000000000000000000..470305758ca5ddf8b16ceae58385161e87a4a962
--- /dev/null
+++ b/chrome/test/functional/test_clean_exit.py
@@ -0,0 +1,39 @@
+#!/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 tempfile
+import unittest
+
+import pyauto_functional
+import pyauto
+
+
+class SimpleTest(pyauto.PyUITest):
+
+  def ExtraChromeFlags(self):
+    """Ensures Chrome is launched with custom flags.
+
+    Returns:
+      A list of extra flags to pass to Chrome when it is launched.
+    """
+    # Extra flag needed by scroll performance tests.
+    fd, self._strace_log = tempfile.mkstemp()
+    os.close(fd)
+    return ['--no-sandbox', '--renderer-clean-exit',

[Nirnimesh, 2012/04/06 04:34:10]

This method should only ever append to the parent's list.
ie. return pyauto.PyUITest.ExtraChromeFlags(self) + [ '--no-sandbox', ....]

Or else weird things will happen on chromeos.

[asharif1, 2012/04/06 18:45:58]

Done.

+            '--renderer-cmd-prefix=/usr/bin/strace -o %s' % self._strace_log]
+
+
+  def testCleanExit(self):
+    """Ensures the renderer process cleanly exits."""
+    self.NavigateToURL('http://www.google.com')

[Nirnimesh, 2012/04/06 04:34:10]

You don't need to navigate to a live URL. Just use one of the files in the data
dir.
say: self.GetHttpURLForDataPath('title2.html')

[asharif1, 2012/04/06 18:45:58]

Done.

+    crash_url = 'about:inducebrowsercrashforrealz'
+    self.NavigateToURL(crash_url)
+    strace_contents = open(self._strace_log).read()

[Nirnimesh, 2012/04/06 04:34:10]

Delete self._strace_log after this?

[asharif1, 2012/04/06 18:45:58]

Done.

+    self.assertTrue("exit_group" in strace_contents)

[Nirnimesh, 2012/04/06 04:34:10]

use ' instead of " for consistency

[asharif1, 2012/04/06 18:45:58]

Done.

+
+
+if __name__ == '__main__':
+  pyauto_functional.Main()