make new syncer thread the default.

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::_, testing::_)).
       WillByDefault(InvokeTask());
 }
 
 SyncBackendHostMock::~SyncBackendHostMock() {}
 
 }  // namespace browser_sync