drive/syncFS: Switch to ID based download URL.

chrome/browser/sync_file_system/drive_backend/api_util.cc

 // 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.
 
 #include "chrome/browser/sync_file_system/drive_backend/api_util.h"
 
 #include <algorithm>
 #include <functional>
 #include <sstream>
 #include <string>
@@ skipping 707 matching lines @@
   // If local file and remote file are same, cancel the download.
   if (local_file_md5 == entry->file_md5()) {
     callback.Run(google_apis::HTTP_NOT_MODIFIED,
                  local_file_md5,
                  entry->file_size(),
                  entry->updated_time());
     return;
   }
 
   DVLOG(2) << "Downloading file: " << entry->resource_id();
-  const GURL& download_url = entry->download_url();
+  const std::string& resource_id = entry->resource_id();
   drive_service_->DownloadFile(local_file_path,
-                               download_url,
+                               resource_id,
                                base::Bind(&APIUtil::DidDownloadFile,
                                           AsWeakPtr(),
                                           base::Passed(&entry),
                                           callback),
                                google_apis::GetContentCallback(),
                                google_apis::ProgressCallback());
 }
 
 void APIUtil::DidDownloadFile(scoped_ptr<google_apis::ResourceEntry> entry,
                               const DownloadFileCallback& callback,
@@ skipping 337 matching lines @@
 }
 
 std::string APIUtil::GetRootResourceId() const {
   if (IsDriveAPIDisabled())
     return drive_service_->GetRootResourceId();
   return root_resource_id_;
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system