Add ProgressCallback to DriveServiceInterface::DownloadFile.

chrome/browser/sync_file_system/drive_file_sync_client_unittest.cc

 // 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.
 
 #include "chrome/browser/sync_file_system/drive_file_sync_client.h"
 
 #include "base/json/json_reader.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/values.h"
@@ skipping 753 matching lines @@
           google_apis::HTTP_SUCCESS,
           base::Passed(&file_entry)))
       .RetiresOnSaturation();
 
   // Expect to call DriveUploaderInterface::DownloadFile from
   // DidGetResourceEntryForDownloadFile.
   EXPECT_CALL(*mock_drive_service(),
               DownloadFile(_,  // drive_path
                            kLocalFilePath,
                            file_entry_copy->download_url(),
-                           _, _))
+                           _, _, _))
       .WillOnce(InvokeDownloadActionCallback3(google_apis::HTTP_SUCCESS,
                                               kLocalFilePath))
       .RetiresOnSaturation();
 
   bool done = false;
   std::string file_md5;
   GDataErrorCode error = google_apis::GDATA_OTHER_ERROR;
   sync_client()->DownloadFile(kResourceId,
                               kLocalFileMD5,
                               kLocalFilePath,
@@ skipping 225 matching lines @@
                             base::Bind(&DidDeleteFile, &done, &error));
   message_loop()->RunUntilIdle();
 
   EXPECT_TRUE(done);
   EXPECT_EQ(google_apis::HTTP_CONFLICT, error);
 }
 
 #endif  // !defined(OS_ANDROID)
 
 }  // namespace sync_file_system