Add ProgressCallback to DriveServiceInterface::DownloadFile.

chrome/browser/google_apis/base_operations.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/google_apis/base_operations.h"
 
 #include "base/json/json_reader.h"
 #include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/task_runner_util.h"
@@ skipping 637 matching lines @@
   NotifyProgress(start_position_ + current, content_length_);
 }
 
 //============================ DownloadFileOperation ===========================
 
 DownloadFileOperation::DownloadFileOperation(
     OperationRegistry* registry,
     net::URLRequestContextGetter* url_request_context_getter,
     const DownloadActionCallback& download_action_callback,
     const GetContentCallback& get_content_callback,
+    const ProgressCallback& progress_callback,
     const GURL& download_url,
     const base::FilePath& drive_file_path,
     const base::FilePath& output_file_path)
     : UrlFetchOperationBase(registry,
                             url_request_context_getter,
                             OPERATION_DOWNLOAD,
                             drive_file_path),
       download_action_callback_(download_action_callback),
       get_content_callback_(get_content_callback),
+      progress_callback_(progress_callback),
       download_url_(download_url) {
   DCHECK(!download_action_callback_.is_null());
   // get_content_callback may be null.
 
   // Make sure we download the content into a temp file.
   if (output_file_path.empty())
     set_save_temp_file(true);
   else
     set_output_file_path(output_file_path);
 }
 
 DownloadFileOperation::~DownloadFileOperation() {}
 
 // Overridden from UrlFetchOperationBase.
 GURL DownloadFileOperation::GetURL() const {
   return download_url_;
 }
 
 void DownloadFileOperation::OnURLFetchDownloadProgress(const URLFetcher* source,
                                                        int64 current,
                                                        int64 total) {
   NotifyProgress(current, total);
+  if (!progress_callback_.is_null())
+    progress_callback_.Run(current, total);
 }
 
 bool DownloadFileOperation::ShouldSendDownloadData() {
   return !get_content_callback_.is_null();
 }
 
 void DownloadFileOperation::OnURLFetchDownloadData(
     const URLFetcher* source,
     scoped_ptr<std::string> download_data) {
   if (!get_content_callback_.is_null())
@@ skipping 13 matching lines @@
 
   download_action_callback_.Run(code, temp_file);
   OnProcessURLFetchResultsComplete(code == HTTP_SUCCESS);
 }
 
 void DownloadFileOperation::RunCallbackOnPrematureFailure(GDataErrorCode code) {
   download_action_callback_.Run(code, base::FilePath());
 }
 
 }  // namespace google_apis