Add drive::FileSystem::GetFileByPathForSaving().

chrome/browser/chromeos/drive/fake_file_system.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/chromeos/drive/fake_file_system.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/file_util.h"
@@ skipping 116 matching lines @@
 void FakeFileSystem::Unpin(const base::FilePath& file_path,
                            const FileOperationCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 void FakeFileSystem::GetFileByPath(const base::FilePath& file_path,
                                    const GetFileCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
+void FakeFileSystem::GetFileByPathForSaving(const base::FilePath& file_path,
+                                            const GetFileCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
 void FakeFileSystem::GetFileContentByPath(
     const base::FilePath& file_path,
     const GetFileContentInitializedCallback& initialized_callback,
     const google_apis::GetContentCallback& get_content_callback,
     const FileOperationCallback& completion_callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   GetResourceEntryByPath(
       file_path,
       base::Bind(&FakeFileSystem::GetFileContentByPathAfterGetResourceEntry,
@@ skipping 232 matching lines @@
       callback.Run(FILE_ERROR_OK, entry.Pass());
       return;
     }
   }
 
   callback.Run(FILE_ERROR_NOT_FOUND, scoped_ptr<ResourceEntry>());
 }
 
 }  // namespace test_util
 }  // namespace drive