Remove duplicate NotificationObserver mock.

chrome/chrome_tests.gypi

 # Copyright (c) 2010 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.
 
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
@@ skipping 59 matching lines @@
         'browser/prefs/pref_value_store.cc',
         'browser/prefs/pref_value_store.h',
         'browser/renderer_host/mock_render_process_host.cc',
         'browser/renderer_host/mock_render_process_host.h',
         'browser/renderer_host/test/test_backing_store.cc',
         'browser/renderer_host/test/test_backing_store.h',
         'browser/renderer_host/test/test_render_view_host.cc',
         'browser/renderer_host/test/test_render_view_host.h',
         'browser/tab_contents/test_tab_contents.cc',
         'browser/tab_contents/test_tab_contents.h',
+        'common/notification_observer_mock.h',
         'common/ipc_test_sink.cc',
         'common/ipc_test_sink.h',
         'renderer/mock_keyboard.cc',
         'renderer/mock_keyboard.h',
         'renderer/mock_keyboard_driver_win.cc',
         'renderer/mock_keyboard_driver_win.h',
         'renderer/mock_printer.cc',
         'renderer/mock_printer.h',
         'renderer/mock_render_process.cc',
         'renderer/mock_render_process.h',
@@ skipping 1561 matching lines @@
         'service/cloud_print/cloud_print_helpers_unittest.cc',
         'service/cloud_print/cloud_print_url_fetcher_unittest.cc',
         'service/service_process_unittest.cc',
         'test/browser_with_test_window_test.cc',
         'test/browser_with_test_window_test.h',
         'test/data/resource.rc',
         'test/file_test_utils.cc',
         'test/file_test_utils.h',
         'test/menu_model_test.cc',
         'test/menu_model_test.h',
-        'test/mock_notification_observer.h',
         'test/render_view_test.cc',
         'test/render_view_test.h',
         'test/sync/test_http_bridge_factory.h',
         'test/test_notification_tracker.cc',
         'test/test_notification_tracker.h',
         'test/v8_unit_test.cc',
         'test/v8_unit_test.h',
         'tools/convert_dict/convert_dict_unittest.cc',
         '../testing/gtest_mac_unittest.mm',
         '../third_party/cld/encodings/compact_lang_det/compact_lang_det_unittest_small.cc',
@@ skipping 1754 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
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