[Sync] Tidy up SyncBackendHost interface.

chrome/browser/sync/glue/sync_backend_host_mock.cc

 // 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.
 
 #include "chrome/browser/sync/glue/sync_backend_host_mock.h"
 
 namespace browser_sync {
 
+ACTION(InvokeTask) {
+  arg2->Run();
+  delete arg2;
+}
+
 SyncBackendHostMock::SyncBackendHostMock() {
   // By default, the RequestPause and RequestResume methods will
   // send the confirmation notification and return true.
   ON_CALL(*this, RequestPause()).
       WillByDefault(testing::DoAll(Notify(NotificationType::SYNC_PAUSED),
                                    testing::Return(true)));
   ON_CALL(*this, RequestResume()).
       WillByDefault(testing::DoAll(Notify(NotificationType::SYNC_RESUMED),
                                    testing::Return(true)));
 
   // By default, invoke the ready callback.
-  ON_CALL(*this, ConfigureDataTypes(testing::_, testing::_)).
+  ON_CALL(*this, ConfigureDataTypes(testing::_, testing::_, testing::_)).
       WillByDefault(InvokeTask());
 }
 
 SyncBackendHostMock::~SyncBackendHostMock() {}
 
 }  // namespace browser_sync