Add request header on gdata operation for testing ETag match.

chrome/browser/chromeos/drive/drive_api_service.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/chromeos/drive/drive_api_service.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 147 matching lines @@
 
   runner_->StartOperationWithRetry(
       new gdata::GetApplistOperation(operation_registry(), callback));
 }
 
 void DriveAPIService::DownloadDocument(
     const FilePath& virtual_path,
     const FilePath& local_cache_path,
     const GURL& document_url,
     DocumentExportFormat format,
+    const std::string& etag,
     const gdata::DownloadActionCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // TODO(kochi): Implement this.
   NOTREACHED();
 }
 
 void DriveAPIService::DownloadFile(
       const FilePath& virtual_path,
       const FilePath& local_cache_path,
       const GURL& document_url,
+      const std::string& etag,
       const gdata::DownloadActionCallback& download_action_callback,
       const gdata::GetContentCallback& get_content_callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // TODO(kochi): Implement this.
   NOTREACHED();
 }
 
 void DriveAPIService::DeleteDocument(
     const GURL& document_url,
+    const std::string& etag,
     const gdata::EntryActionCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // TODO(kochi): Implement this.
   NOTREACHED();
 }
 
 void DriveAPIService::CreateDirectory(
     const GURL& parent_content_url,
     const FilePath::StringType& directory_name,
@@ skipping 102 matching lines @@
       DriveServiceObserver, observers_, OnProgressUpdate(list));
 }
 
 void DriveAPIService::OnAuthenticationFailed(gdata::GDataErrorCode error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   FOR_EACH_OBSERVER(
       DriveServiceObserver, observers_, OnAuthenticationFailed(error));
 }
 
 }  // namespace drive