Added implementation of SyncEventObserver to route events to Javascript Extension.

chrome/browser/sync_file_system/sync_event_observer.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_EVENT_OBSERVER_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_EVENT_OBSERVER_H_
 
 #include <string>
 
 #include "webkit/fileapi/syncable/sync_operation_type.h"
 
+class GURL;
+
 namespace fileapi {
 class FileSystemURL;
 }
 
 namespace sync_file_system {
 
 class SyncEventObserver {
  public:
   typedef fileapi::SyncOperationType SyncOperationType;
 
@@ skipping 20 matching lines @@
   };
 
   // Reports there was a state change in the sync file system backend.
   // If |app_origin| is empty, then broadcast to all registered apps.
   virtual void OnSyncStateUpdated(const GURL& app_origin,
                                   SyncServiceState state,
                                   const std::string& description) = 0;
 
   // Reports the file |url| was updated for |operation|
   // by the sync file system backend.
-  virtual void OnFileSynced(fileapi::SyncStatusCode status,
-                            fileapi::SyncOperationType operation,
+  virtual void OnFileSynced(fileapi::SyncOperationType operation,
                             const fileapi::FileSystemURL& url) = 0;

[kinuko, 2012/11/28 11:06:40]

When you rebase the code you'll see the new code, the new signature takes
parameters in (url, operation) order but not (operation, url).

[calvinlo, 2012/11/28 12:26:34]

Thanks for the tip. Rebased and updated.

-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SyncEventObserver);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_EVENT_OBSERVER_H_