Remove references to DrMemory from chromium repo.

PRESUBMIT_test.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 re
 import subprocess
 import unittest
 
 import PRESUBMIT
@@ skipping 774 matching lines @@
             'win8_aura',
             'win8_chromium_dbg',
             'win8_chromium_rel',
             'win_chromium_compile_dbg',
             'win_chromium_compile_rel',
             'win_chromium_dbg',
             'win_chromium_rel',
             'win_chromium_rel',
             'win_chromium_x64_dbg',
             'win_chromium_x64_rel',
-            'win_drmemory',
             'win_nacl_sdk',
             'win_nacl_sdk_build',
             'win_rel_naclmore',
          ],
     }
     for master, bots in bots.iteritems():
       for bot in bots:
         self.assertEqual(master, PRESUBMIT.GetTryServerMasterForBot(bot),
                          'bot=%s: expected %s, computed %s' % (
             bot, master, PRESUBMIT.GetTryServerMasterForBot(bot)))
@@ skipping 304 matching lines @@
                ['char* host = "https://www.aol.com"; // google.com'])
     ]
 
     warnings = PRESUBMIT._CheckHardcodedGoogleHostsInLowerLayers(
       input_api, MockOutputApi())
     self.assertEqual(0, len(warnings))
 
 
 if __name__ == '__main__':
   unittest.main()