Fixed to return original context element.

chrome/test/data/webui/webui_resource_browsertest.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 <vector>
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ skipping 119 matching lines @@
   AddLibrary(IDR_WEBUI_JS_CR_UI_POSITION_UTIL);
   RunTest(base::FilePath(FILE_PATH_LITERAL("position_util_test.html")));
 }
 
 IN_PROC_BROWSER_TEST_F(WebUIResourceBrowserTest, RepeatingButtonTest) {
   AddLibrary(IDR_WEBUI_JS_CR);
   AddLibrary(IDR_WEBUI_JS_CR_UI);
   AddLibrary(IDR_WEBUI_JS_CR_UI_REPEATING_BUTTON);
   RunTest(base::FilePath(FILE_PATH_LITERAL("repeating_button_test.html")));
 }
+
+IN_PROC_BROWSER_TEST_F(WebUIResourceBrowserTest, ContextMenuHandlerTest) {
+  AddLibrary(IDR_WEBUI_JS_ASSERT);
+  AddLibrary(IDR_WEBUI_JS_EVENT_TRACKER);
+  AddLibrary(IDR_WEBUI_JS_CR);
+  AddLibrary(IDR_WEBUI_JS_CR_EVENT_TARGET);
+  AddLibrary(IDR_WEBUI_JS_CR_UI);
+  AddLibrary(IDR_WEBUI_JS_CR_UI_POSITION_UTIL);
+  AddLibrary(IDR_WEBUI_JS_CR_UI_MENU_ITEM);
+  AddLibrary(IDR_WEBUI_JS_CR_UI_MENU_BUTTON);
+  AddLibrary(IDR_WEBUI_JS_CR_UI_MENU);
+  AddLibrary(IDR_WEBUI_JS_CR_UI_CONTEXT_MENU_HANDLER);
+  RunTest(base::FilePath(FILE_PATH_LITERAL("context_menu_handler_test.html")));
+}