Refactoring DownloadManager::DownloadURL to add proper annotation.

content/browser/download/download_request_core_unittest.cc

Index: content/browser/download/download_request_core_unittest.cc
diff --git a/content/browser/download/download_request_core_unittest.cc b/content/browser/download/download_request_core_unittest.cc
index f2eba00872c29674257a4eaf4d86bf3cbd255e17..2be6a58de5f6e9c31499745c1255a36c30acbdeb 100644
--- a/content/browser/download/download_request_core_unittest.cc
+++ b/content/browser/download/download_request_core_unittest.cc
@@ -12,6 +12,7 @@
 #include "content/public/browser/download_url_parameters.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "net/http/http_request_headers.h"
+#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -47,7 +48,7 @@ class DownloadRequestCoreTest : public testing::Test {
 
   void CreateRequestOnIOThread(DownloadUrlParameters* params) {
     url_request_ = DownloadRequestCore::CreateRequestOnIOThread(
-        DownloadItem::kInvalidId, params);
+        DownloadItem::kInvalidId, params, TRAFFIC_ANNOTATION_FOR_TESTS);
     DCHECK(url_request_.get());
   }