Remove TransferFileFromRemoteToLocal, which are no longer used.

chrome/browser/chromeos/drive/file_system_interface.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_DRIVE_FILE_SYSTEM_INTERFACE_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_INTERFACE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 164 matching lines @@
   // other functions.
   virtual void Initialize() = 0;
 
   // Adds and removes the observer.
   virtual void AddObserver(FileSystemObserver* observer) = 0;
   virtual void RemoveObserver(FileSystemObserver* observer) = 0;
 
   // Checks for updates on the server.
   virtual void CheckForUpdates() = 0;
 
-  // Initiates transfer of |remote_src_file_path| to |local_dest_file_path|.
-  // |remote_src_file_path| is the virtual source path on the Drive file system.
-  // |local_dest_file_path| is the destination path on the local file system.
-  //
-  // |callback| must not be null.
-  virtual void TransferFileFromRemoteToLocal(
-      const base::FilePath& remote_src_file_path,
-      const base::FilePath& local_dest_file_path,
-      const FileOperationCallback& callback) = 0;
-
   // Initiates transfer of |local_src_file_path| to |remote_dest_file_path|.
   // |local_src_file_path| must be a file from the local file system.
   // |remote_dest_file_path| is the virtual destination path within Drive file
   // system.
   //
   // |callback| must not be null.
   virtual void TransferFileFromLocalToRemote(
       const base::FilePath& local_src_file_path,
       const base::FilePath& remote_dest_file_path,
       const FileOperationCallback& callback) = 0;
@@ skipping 223 matching lines @@
       const std::string& resource_id,
       const GetCacheEntryCallback& callback) = 0;
 
   // Reloads the resource metadata from the server.
   virtual void Reload() = 0;
 };
 
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_INTERFACE_H_