Added Header and Footer support using Skia

printing/print_settings.h

Index: printing/print_settings.h
diff --git a/printing/print_settings.h b/printing/print_settings.h
index ee785564e90e5647058fee7f8834acec9cc166b5..8fea6dd3b3860b7f6ca1b6f5850464bfc42b8d2d 100644
--- a/printing/print_settings.h
+++ b/printing/print_settings.h
@@ -7,6 +7,8 @@
 
 #include <string>
 
+#include "base/memory/scoped_ptr.h"
+#include "base/string16.h"
 #include "printing/page_range.h"
 #include "printing/page_setup.h"
 #include "ui/gfx/rect.h"
@@ -95,6 +97,14 @@ class PrintSettings {
   // Updates the orientation and flip the page if needed.
   void SetOrientation(bool landscape);
 
+  // Strings to be printed as headers and footers if requested by the user.
+  string16 date;
+  string16 title;
+  string16 url;
+
+  // True if the user wants headers and footers to be displayed.
+  bool display_header_footer;
+
  private:
   //////////////////////////////////////////////////////////////////////////////
   // Settings that can't be changed without side-effects.