Fix for xlib build bustage.

widget/src/xlib/nsWidget.cpp

@@ -325,6 +325,13 @@ NS_IMETHODIMP nsWidget::SetFocus(void)
   return NS_OK;
 }
 
+NS_IMETHODIMP nsWidget::SetName(const char * aName)
+{
+  mName = aName;
+
+  return NS_OK;
+}
+
 Window
 nsWidget::GetFocusWindow(void)
 {

widget/src/xlib/nsWidget.h

@@ -80,6 +80,7 @@ public:
 
   NS_IMETHOD Enable(PRBool bState);
   NS_IMETHOD              SetFocus(void);
+  NS_IMETHOD              SetName(const char * aName);
   NS_IMETHOD              SetBackgroundColor(const nscolor &aColor);
   virtual nsIFontMetrics* GetFont(void);
   NS_IMETHOD              SetFont(const nsFont &aFont);