Refactoring DownloadManager::DownloadURL to add proper annotation.

chrome/browser/extensions/api/streams_private/streams_private_apitest.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 <utility>
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
@@ skipping 12 matching lines @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/download_test_observer.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/manifest_handlers/mime_types_handler.h"
 #include "extensions/test/result_catcher.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "net/test/embedded_test_server/http_request.h"
 #include "net/test/embedded_test_server/http_response.h"
+#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using content::BrowserContext;
 using content::BrowserThread;
 using content::DownloadItem;
 using content::DownloadManager;
 using content::DownloadUrlParameters;
 using content::WebContents;
 using extensions::Event;
 using extensions::ExtensionSystem;
@@ skipping 340 matching lines @@
   // Set the downloads parameters.
   content::WebContents* web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   ASSERT_TRUE(web_contents);
   std::unique_ptr<DownloadUrlParameters> params(
       DownloadUrlParameters::CreateForWebContentsMainFrame(
           web_contents, url));
   params->set_file_path(target_path);
 
   // Start download of the URL with a path "/text_path.txt" on the test server.
-  download_manager->DownloadUrl(std::move(params));
+  download_manager->DownloadUrl(std::move(params),
+                                TRAFFIC_ANNOTATION_FOR_TESTS);
 
   // Wait for the download to start.
   download_observer->WaitForFinished();
 
   // There should have been one download.
   std::vector<DownloadItem*> downloads;
   download_manager->GetAllDownloads(&downloads);
   ASSERT_EQ(1u, downloads.size());
 
   // Cancel and delete the download statred in the test.
@@ skipping 42 matching lines @@
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(catcher.GetNextResult());
 
   ui_test_utils::NavigateToURL(browser(),
                                test_server_->GetURL("/abort.rtf"));
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(catcher.GetNextResult());
 }
 
 }  // namespace