gdata: Remove use of FindEntryByPathSync() from MoveEntryFromRootDirectory()

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 366 matching lines @@
   // another directory at |dir_path|. This function does nothing if
   // |dir_path| points to the root directory.
   //
   // Can be called from UI thread. |callback| is run on the calling thread.
   // |callback| must not be null.
   void MoveEntryFromRootDirectory(const FilePath& dir_path,
                                   const FileOperationCallback& callback,
                                   GDataFileError error,
                                   const FilePath& file_path);
 
+  // Part of MoveEntryFromRootDirectory(). Called after
+  // GetEntryInfoPairByPaths() is complete. |callback| must not be null.
+  void MoveEntryFromRootDirectoryAfterGetEntryInfoPair(
+    const FileOperationCallback& callback,
+    scoped_ptr<EntryInfoPairResult> result);
+
   // Removes a file or directory at |file_path| from the directory at
   // |dir_path| and moves it to the root directory.
   //
   // Can be called from UI thread. |callback| is run on the calling thread.
   void RemoveEntryFromDirectory(const FilePath& dir_path,
                                 const FileMoveCallback& callback,
                                 GDataFileError error,
                                 const FilePath& file_path);
 
   // Removes file under |file_path| from in-memory snapshot of the file system.
@@ skipping 452 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_