Use explicit WebString conversions in remaining content files

content/renderer/menu_item_builder.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 "content/renderer/menu_item_builder.h"
 
 #include <stddef.h>
 
 #include "content/public/common/menu_item.h"
 
 namespace content {
 
 MenuItem MenuItemBuilder::Build(const blink::WebMenuItemInfo& item) {
   MenuItem result;
 
-  result.label = item.label;
-  result.icon = item.icon;
-  result.tool_tip = item.toolTip;
+  result.label = item.label.utf16();
+  result.icon = item.icon.utf16();
+  result.tool_tip = item.toolTip.utf16();
   result.type = static_cast<MenuItem::Type>(item.type);
   result.action = item.action;
   result.rtl = (item.textDirection == blink::WebTextDirectionRightToLeft);
   result.has_directional_override = item.hasTextDirectionOverride;
   result.enabled = item.enabled;
   result.checked = item.checked;
   for (size_t i = 0; i < item.subMenuItems.size(); ++i)
     result.submenu.push_back(MenuItemBuilder::Build(item.subMenuItems[i]));
 
   return result;
 }
 
 }  // namespace content