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..5e081afc8d95703caa23b7e492ed1ecbff787dba
--- /dev/null
+++ b/chrome/test/functional/test_clean_exit.py
@@ -0,0 +1,43 @@
+#!/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
+import test_utils
+
+
+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)
+    extra_flags = ['--no-sandbox', '--renderer-clean-exit',
+                   '--renderer-cmd-prefix=/usr/bin/strace -o %s' %
+                    self._strace_log]
+    return pyauto.PyUITest.ExtraChromeFlags(self) + extra_flags
+
+
+  def testCleanExit(self):
+    """Ensures the renderer process cleanly exits."""
+    url = self.GetHttpURLForDataPath('title2.html')
+    self.NavigateToURL(url)
+    test_utils.CrashBrowser(self)
+    strace_contents = open(self._strace_log).read()
+    self.assertTrue('exit_group' in strace_contents)
+    os.remove(self._strace_log)
+
+
+if __name__ == '__main__':
+  pyauto_functional.Main()