Add --sanitizer-mode to run-webkit-tests

Tools/Scripts/webkitpy/layout_tests/port/driver.py

 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 149 matching lines @@
 
         self._server_process.write(command)
         text, audio = self._read_first_block(deadline)  # First block is either text or audio
         image, actual_image_hash = self._read_optional_image_block(deadline)  # The second (optional) block is image data.
 
         crashed = self.has_crashed()
         timed_out = self._server_process.timed_out
         pid = self._server_process.pid()
         leaked = self._leaked
 
+        if not crashed and 'AddressSanitizer' in self.error_from_test:
+            self.error_from_test = 'OUTPUT CONTAINS "AddressSanitizer", so we are treating this test as if it crashed, even though it did not.\n\n' + self.error_from_test
+            crashed = True
+
         if stop_when_done or crashed or timed_out or leaked:
             # We call stop() even if we crashed or timed out in order to get any remaining stdout/stderr output.
             # In the timeout case, we kill the hung process as well.
             out, err = self._server_process.stop(self._port.driver_stop_timeout() if stop_when_done else 0.0)
             if out:
                 text += out
             if err:
                 self.error_from_test += err
             self._server_process = None
 
@@ skipping 320 matching lines @@
         self.content = str()  # FIXME: Should be bytearray() once we require Python 2.6.
         self.decoded_content = None
         self.malloc = None
         self.js_heap = None
 
     def decode_content(self):
         if self.encoding == 'base64' and self.content is not None:
             self.decoded_content = base64.b64decode(self.content)
         else:
             self.decoded_content = self.content