mac: Move EventWithMenuAction() to the only file where it's called.

webkit/glue/webmenurunner_mac.h

Index: webkit/glue/webmenurunner_mac.h
diff --git a/webkit/glue/webmenurunner_mac.h b/webkit/glue/webmenurunner_mac.h
index e12252612b53be73c78daebf8202d4ecfb64e7a6..1f134ab92321d27834009573a631fc99cfea6c39 100644
--- a/webkit/glue/webmenurunner_mac.h
+++ b/webkit/glue/webmenurunner_mac.h
@@ -58,16 +58,4 @@
 
 @end  // @interface WebMenuRunner
 
-namespace webkit_glue {
-// Helper function for users of WebMenuRunner, for manufacturing input events to
-// send to WebKit. If |item_chosen| is YES, we manufacture a mouse click event
-// that corresponds to the menu item that was selected, |selected_index|, based
-// on the position of the mouse click. Of |item_chosen| is NO, we create a
-// keyboard event that simulates an ESC (menu dismissal) action. The event is
-// designed to be sent to WebKit for processing by the PopupMenu class.
-NSEvent* EventWithMenuAction(BOOL item_chosen, int window_num,
-                             int item_height, int selected_index,
-                             NSRect menu_bounds, NSRect view_bounds);
-}  // namespace webkit_glue
-
 #endif // WEBKIT_GLUE_WEBMENURUNNER_MAC_H_