Printing: Remove unused PageOverlay since header/footers are drawn in PrintWebViewHelper.

printing/print_settings.h

Index: printing/print_settings.h
===================================================================
--- printing/print_settings.h	(revision 95638)
+++ printing/print_settings.h	(working copy)
@@ -5,7 +5,8 @@
 #ifndef PRINTING_PRINT_SETTINGS_H_
 #define PRINTING_PRINT_SETTINGS_H_
 
-#include "printing/page_overlays.h"
+#include <string>
+
 #include "printing/page_range.h"
 #include "printing/page_setup.h"
 #include "ui/gfx/rect.h"
@@ -78,9 +79,6 @@
   // scaled to ScreenDpi/dpix*desired_dpi.
   int desired_dpi;
 
-  // The various overlays (headers and footers).
-  PageOverlays overlays;
-
   // Indicates if the user only wants to print the current selection.
   bool selection_only;