Added implementation of SyncEventObserver to route events to Javascript Extension.

chrome/browser/sync_file_system/sync_event_observer.h

Index: chrome/browser/sync_file_system/sync_event_observer.h
diff --git a/chrome/browser/sync_file_system/sync_event_observer.h b/chrome/browser/sync_file_system/sync_event_observer.h
index a6731a22c8229b23fa6c74c347b9a0fb53323f83..6a0d3cbb3ce34695551ce1c350ea5e9a0db3e396 100644
--- a/chrome/browser/sync_file_system/sync_event_observer.h
+++ b/chrome/browser/sync_file_system/sync_event_observer.h
@@ -9,6 +9,8 @@
 
 #include "webkit/fileapi/syncable/sync_operation_type.h"
 
+class GURL;
+
 namespace fileapi {
 class FileSystemURL;
 }
@@ -49,12 +51,8 @@ class SyncEventObserver {
 
   // 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