Prefix string16 with base:: in ui/.

ui/views/controls/menu/native_menu_win.h

Index: ui/views/controls/menu/native_menu_win.h
diff --git a/ui/views/controls/menu/native_menu_win.h b/ui/views/controls/menu/native_menu_win.h
index ca6f37bc5c860a7a8e17723252707a0c6b34dafb..ce3a072e416385554cd40ed1d99fa4b3ac84fd71 100644
--- a/ui/views/controls/menu/native_menu_win.h
+++ b/ui/views/controls/menu/native_menu_win.h
@@ -74,7 +74,7 @@ class VIEWS_EXPORT NativeMenuWin : public MenuWrapper {
   // Sets the label of the item at the specified index.
   void SetMenuItemLabel(int menu_index,
                         int model_index,
-                        const string16& label);
+                        const base::string16& label);
 
   // Updates the local data structure with the correctly formatted version of
   // |label| at the specified model_index, and adds string data to |mii| if
@@ -82,7 +82,7 @@ class VIEWS_EXPORT NativeMenuWin : public MenuWrapper {
   // of the peculiarities of the Windows menu API.
   void UpdateMenuItemInfoForString(MENUITEMINFO* mii,
                                    int model_index,
-                                   const string16& label);
+                                   const base::string16& label);
 
   // Returns the alignment flags to be passed to TrackPopupMenuEx, based on the
   // supplied alignment and the UI text direction.