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

chrome/browser/sync/glue/search_engine_data_type_controller.h

Index: chrome/browser/sync/glue/search_engine_data_type_controller.h
diff --git a/chrome/browser/sync/glue/search_engine_data_type_controller.h b/chrome/browser/sync/glue/search_engine_data_type_controller.h
index bf948544ad382c73c45d36ac8814ce1ca42feb21..279552b5d2abb9b4c05ed24cd97f18953885e992 100644
--- a/chrome/browser/sync/glue/search_engine_data_type_controller.h
+++ b/chrome/browser/sync/glue/search_engine_data_type_controller.h
@@ -15,6 +15,8 @@
 
 namespace browser_sync {
 
+class GenericChangeProcessor;
+
 class SearchEngineDataTypeController : public FrontendDataTypeController,
                                        public NotificationObserver {
  public:
@@ -32,6 +34,9 @@ class SearchEngineDataTypeController : public FrontendDataTypeController,
                        const NotificationSource& source,
                        const NotificationDetails& details) OVERRIDE;
 
+ protected:
+  virtual ChangeProcessor* change_processor() const OVERRIDE;
+
  private:
   // FrontendDataTypeController implementations.
   virtual bool StartModels() OVERRIDE;
@@ -43,6 +48,8 @@ class SearchEngineDataTypeController : public FrontendDataTypeController,
   virtual void RecordAssociationTime(base::TimeDelta time) OVERRIDE;
   virtual void RecordStartFailure(StartResult result) OVERRIDE;
 
+  scoped_ptr<GenericChangeProcessor> change_processor_;
+
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchEngineDataTypeController);