gdata: Remove use of FindEntryByPathAsyncOnUI from CreateFileOnUIThread()

chrome/browser/chromeos/gdata/gdata_file_system.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_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 205 matching lines @@
   void TransferRegularFile(const FilePath& local_file_path,
                            const FilePath& remote_dest_file_path,
                            const FileOperationCallback& callback);
 
   // Invoked during the process of CreateFile.
   // First, FindEntryByPathAsyncOnUIThread is called and the result is returned
   // to OnGetEntryInfoForCreateFile. By using the information, CreateFile deals
   // with the cases when an entry already existed at the path. If there was no
   // entry, a new empty file is uploaded, and when it finishes
   // DidUploadForCreateBrandNewFile does the final clean up.
+  // |callback| must not be null.
   void OnGetEntryInfoForCreateFile(
       const FilePath& file_path,
       bool is_exclusive,
       const FileOperationCallback& callback,
       GDataFileError result,
-      GDataEntry* entry);
+      scoped_ptr<GDataEntryProto> entry_proto);
   void DoUploadForCreateBrandNewFile(
       const FilePath& remote_path,
       FilePath* local_path,
       const FileOperationCallback& callback);
   void DidUploadForCreateBrandNewFile(
       const FilePath& local_path,
       const FileOperationCallback& callback,
       GDataFileError result);
 
   // Invoked upon completion of GetEntryInfoByPath initiated by
@@ skipping 617 matching lines @@
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<GDataFileSystem> ui_weak_ptr_factory_;
   // Unlike other classes, we need this as we need this to redirect a task
   // from IO thread to UI thread.
   base::WeakPtr<GDataFileSystem> ui_weak_ptr_;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_