Added implementation of SyncEventObserver to route events to Javascript Extension.

chrome/browser/sync_file_system/sync_file_system_service_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "base/stl_util.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/sync_file_system/local_file_sync_service.h"
@@ skipping 57 matching lines @@
 
 class MockSyncEventObserver : public SyncEventObserver {
  public:
   MockSyncEventObserver() {}
   virtual ~MockSyncEventObserver() {}
 
   MOCK_METHOD3(OnSyncStateUpdated,
                void(const GURL& app_origin,
                     SyncServiceState state,
                     const std::string& description));
-  MOCK_METHOD3(OnFileSynced,
-               void(fileapi::SyncStatusCode status,
-                    fileapi::SyncOperationType operation,
+  MOCK_METHOD2(OnFileSynced,
+               void(fileapi::SyncOperationType operation,
                     const fileapi::FileSystemURL& url));
 };
 
 ACTION_P3(NotifyStateAndCallback,
           mock_remote_service, service_state, operation_status) {
   mock_remote_service->NotifyRemoteServiceStateUpdated(
       service_state, "Test event.");
   base::MessageLoopProxy::current()->PostTask(
       FROM_HERE, base::Bind(arg1, operation_status));
 }
@@ skipping 442 matching lines @@
                             kFile, base::Bind(&VerifyFileError, &event)));
 
   run_loop.Run();
 
   mock_remote_service()->NotifyRemoteChangeAvailable(0);
 
   event.Wait();
 }
 
 }  // namespace sync_file_system