Remove content::NotificationObserver dependency from most Prefs code.

chrome/browser/search_engines/template_url_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_
 
 #include <list>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/prefs/public/pref_change_registrar.h"
+#include "base/prefs/public/pref_observer.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/search_engines/template_url_id.h"
 #include "chrome/browser/webdata/web_data_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "sync/api/sync_change.h"
 #include "sync/api/syncable_service.h"
 
 class GURL;
 class PrefService;
@@ skipping 32 matching lines @@
 // OnTemplateURLServiceChanged as well as the TEMPLATE_URL_SERVICE_LOADED
 // notification message.
 //
 // TemplateURLService takes ownership of any TemplateURL passed to it. If there
 // is a WebDataService, deletion is handled by WebDataService, otherwise
 // TemplateURLService handles deletion.
 
 class TemplateURLService : public WebDataServiceConsumer,
                            public ProfileKeyedService,
                            public content::NotificationObserver,
+                           public PrefObserver,
                            public syncer::SyncableService {
  public:
   typedef std::map<std::string, std::string> QueryTerms;
   typedef std::vector<TemplateURL*> TemplateURLVector;
   // Type for a static function pointer that acts as a time source.
   typedef base::Time(TimeProvider)();
   typedef std::map<std::string, syncer::SyncData> SyncDataMap;
 
   // Struct used for initializing the data store with fake data.
   // Each initializer is mapped to a TemplateURL.
@@ skipping 177 matching lines @@
   // Returns the locale-direction-adjusted short name for the given keyword.
   // Also sets the out param to indicate whether the keyword belongs to an
   // extension.
   string16 GetKeywordShortName(const string16& keyword,
                                bool* is_extension_keyword);
 
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  virtual void OnPreferenceChanged(PrefServiceBase* service,
+                                   const std::string& pref_name) OVERRIDE;
+
   // syncer::SyncableService implementation.
 
   // Returns all syncable TemplateURLs from this model as SyncData. This should
   // include every search engine and no Extension keywords.
   virtual syncer::SyncDataList GetAllSyncData(
       syncer::ModelType type) const OVERRIDE;
   // Process new search engine changes from Sync, merging them into our local
   // data. This may send notifications if local search engines are added,
   // updated or removed.
   virtual syncer::SyncError ProcessSyncChanges(
@@ skipping 394 matching lines @@
 
   // This is used to log the origin of changes to the default search provider.
   // We set this value to increasingly specific values when we know what is the
   // cause/origin of a default search change.
   DefaultSearchChangeOrigin dsp_change_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLService);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_