Add drive::FileSystem::GetFileByPathForSaving().

chrome/browser/chromeos/drive/dummy_file_system.h

 // Copyright 2013 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_DUMMY_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_DUMMY_FILE_SYSTEM_H_
 
 #include "chrome/browser/chromeos/drive/file_system_interface.h"
 
 namespace drive {
@@ skipping 40 matching lines @@
                          const FileOperationCallback& callback) OVERRIDE {}
   virtual void TruncateFile(const base::FilePath& file_path,
                             int64 length,
                             const FileOperationCallback& callback) OVERRIDE {}
   virtual void Pin(const base::FilePath& file_path,
                    const FileOperationCallback& callback) OVERRIDE {}
   virtual void Unpin(const base::FilePath& file_path,
                      const FileOperationCallback& callback) OVERRIDE {}
   virtual void GetFileByPath(const base::FilePath& file_path,
                              const GetFileCallback& callback) OVERRIDE {}
+  virtual void GetFileByPathForSaving(
+      const base::FilePath& file_path,
+      const GetFileCallback& callback) OVERRIDE {}
   virtual void GetFileContentByPath(
       const base::FilePath& file_path,
       const GetFileContentInitializedCallback& initialized_callback,
       const google_apis::GetContentCallback& get_content_callback,
       const FileOperationCallback& completion_callback) OVERRIDE {}
   virtual void GetResourceEntryByPath(
       const base::FilePath& file_path,
       const GetResourceEntryCallback& callback) OVERRIDE {}
   virtual void ReadDirectoryByPath(
       const base::FilePath& file_path,
@@ skipping 22 matching lines @@
       const FileOperationCallback& callback) OVERRIDE {}
   virtual void GetCacheEntryByResourceId(
       const std::string& resource_id,
       const GetCacheEntryCallback& callback) OVERRIDE {}
   virtual void Reload() OVERRIDE {}
 };
 
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_DUMMY_FILE_SYSTEM_H_