Add media size capability to PDF printer.

chrome/browser/ui/webui/print_preview/print_preview_handler.h

Index: chrome/browser/ui/webui/print_preview/print_preview_handler.h
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_handler.h b/chrome/browser/ui/webui/print_preview/print_preview_handler.h
index 5ff8fb4dd55d968638b1848652e42b62fa151d73..70464a8592ad3ff168a80300c592822523f34bb5 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_handler.h
+++ b/chrome/browser/ui/webui/print_preview/print_preview_handler.h
@@ -35,11 +35,6 @@ namespace gfx {
 class Size;
 }
 
-namespace printing {
-struct PageSizeMargins;
-class PrintBackend;
-}
-
 // The handler for Javascript messages related to the print preview dialog.
 class PrintPreviewHandler
     : public content::WebUIMessageHandler,
@@ -277,9 +272,6 @@ class PrintPreviewHandler
       base::DictionaryValue* printer_value);
 #endif
 
-  // Pointer to current print system.
-  scoped_refptr<printing::PrintBackend> print_backend_;
-
   // The underlying dialog object.
   scoped_refptr<ui::SelectFileDialog> select_file_dialog_;