[Sync] Consolidate DataTypeController methods that post on the backend thread

chrome/browser/sync/glue/autofill_data_type_controller.h

Index: chrome/browser/sync/glue/autofill_data_type_controller.h
diff --git a/chrome/browser/sync/glue/autofill_data_type_controller.h b/chrome/browser/sync/glue/autofill_data_type_controller.h
index 34bb690731df8c369a6727a256e4fcdd5a2497b6..ea0f826102bd78c7de02ff97c1d417040d820525 100644
--- a/chrome/browser/sync/glue/autofill_data_type_controller.h
+++ b/chrome/browser/sync/glue/autofill_data_type_controller.h
@@ -40,12 +40,13 @@ class AutofillDataTypeController : public NewNonFrontendDataTypeController,
 
  protected:
   // NewNonFrontendDataTypeController implementation.
+  virtual bool PostTaskOnBackendThread(
+      const tracked_objects::Location& from_here,
+      const base::Closure& task) OVERRIDE;
   virtual bool StartModels() OVERRIDE;
-  virtual bool StartAssociationAsync() OVERRIDE;
   virtual base::WeakPtr<SyncableService> GetWeakPtrToSyncableService()
       const OVERRIDE;
   virtual void StopModels() OVERRIDE;
-  virtual void StopLocalServiceAsync() OVERRIDE;
   virtual void RecordUnrecoverableError(
       const tracked_objects::Location& from_here,
       const std::string& message) OVERRIDE;