Remove duplicate NotificationService causing assertion failures in

debug builds of reliability_tests.

BUG=90443
TBR=phajdan.jr
Review URL: http://codereview.chromium.org/7790019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98744 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/reliability/page_load_test.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 //
@@ -669,8 +669,6 @@ class PageLoadTest : public UITest {
     return test_dir;
   }
 
-  NotificationService notification_service_;
-
   // The pathname of Chrome's crash dumps directory.
   FilePath crash_dumps_dir_path_;