Add ProgressCallback to DriveServiceInterface::DownloadFile.

chrome/browser/google_apis/fake_drive_service.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_GOOGLE_APIS_FAKE_DRIVE_SERVICE_H_
 #define CHROME_BROWSER_GOOGLE_APIS_FAKE_DRIVE_SERVICE_H_
 
 #include "base/files/file_path.h"
 #include "base/values.h"
 #include "chrome/browser/google_apis/drive_service_interface.h"
@@ skipping 105 matching lines @@
       const GetAboutResourceCallback& callback) OVERRIDE;
   virtual void GetAppList(const GetAppListCallback& callback) OVERRIDE;
   virtual void DeleteResource(const std::string& resource_id,
                               const std::string& etag,
                               const EntryActionCallback& callback) OVERRIDE;
   virtual void DownloadFile(
       const base::FilePath& virtual_path,
       const base::FilePath& local_cache_path,
       const GURL& download_url,
       const DownloadActionCallback& download_action_callback,
-      const GetContentCallback& get_content_callback) OVERRIDE;
+      const GetContentCallback& get_content_callback,
+      const ProgressCallback& progress_callback) OVERRIDE;
   // The new resource ID for the copied document will look like
   // |resource_id| + "_copied".
   virtual void CopyHostedDocument(
       const std::string& resource_id,
       const std::string& new_name,
       const GetResourceEntryCallback& callback) OVERRIDE;
   virtual void RenameResource(const std::string& resource_id,
                               const std::string& new_name,
                               const EntryActionCallback& callback) OVERRIDE;
   virtual void AddResourceToDirectory(
@@ skipping 111 matching lines @@
   int about_resource_load_count_;
   bool offline_;
   base::FilePath last_cancelled_file_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeDriveService);
 };
 
 }  // namespace google_apis
 
 #endif  // CHROME_BROWSER_GOOGLE_APIS_FAKE_DRIVE_SERVICE_H_