[Sync] Refactor non-frontend DTC to handle new API properly.

chrome/browser/search_engines/template_url_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/search_engines/search_host_to_urls_map.h"
 #include "chrome/browser/search_engines/template_url_id.h"
 #include "chrome/browser/sync/api/sync_change.h"
 #include "chrome/browser/sync/api/syncable_service.h"
 #include "chrome/browser/webdata/web_data_service.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 
@@ skipping 29 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 NotificationObserver,
-                           public SyncableService {
+                           public SyncableService,
+                           public base::SupportsWeakPtr<TemplateURLService> {
  public:
   typedef std::map<std::string, std::string> QueryTerms;
   typedef std::vector<const TemplateURL*> TemplateURLVector;
   // Type for a static function pointer that acts as a time source.
   typedef base::Time(TimeProvider)();
   typedef std::map<std::string, SyncData> SyncDataMap;
 
   // Struct used for initializing the data store with fake data.
   // Each initializer is mapped to a TemplateURL.
   struct Initializer {
@@ skipping 494 matching lines @@
   // true, we ignore any local search engine changes, since we triggered them.
   bool processing_syncer_changes_;
 
   // Sync's SyncChange handler. We push all our changes through this.
   SyncChangeProcessor* sync_processor_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLService);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_