Make ExtensionPrefValueMap a ProfileKeyedService.

chrome/chrome_browser_extensions.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_extensions',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 295 matching lines @@
         'browser/extensions/extension_navigation_observer.cc',
         'browser/extensions/extension_navigation_observer.h',
         'browser/extensions/extension_omnibox_api.cc',
         'browser/extensions/extension_omnibox_api.h',
         'browser/extensions/extension_page_capture_api.cc',
         'browser/extensions/extension_page_capture_api.h',
         'browser/extensions/extension_pref_store.cc',
         'browser/extensions/extension_pref_store.h',
         'browser/extensions/extension_pref_value_map.cc',
         'browser/extensions/extension_pref_value_map.h',
+        'browser/extensions/extension_pref_value_map_factory.cc',
+        'browser/extensions/extension_pref_value_map_factory.h',
         'browser/extensions/extension_preference_api.cc',
         'browser/extensions/extension_preference_api.h',
         'browser/extensions/extension_preference_api_constants.cc',
         'browser/extensions/extension_preference_api_constants.h',
         'browser/extensions/extension_preference_helpers.cc',
         'browser/extensions/extension_preference_helpers.h',
         'browser/extensions/extension_prefs.cc',
         'browser/extensions/extension_prefs.h',
         'browser/extensions/extension_prefs_scope.h',
         'browser/extensions/extension_process_manager.cc',
@@ skipping 261 matching lines @@
                 }],
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }