Add Postscript Printing

components/printing/renderer/print_web_view_helper.h

Index: components/printing/renderer/print_web_view_helper.h
diff --git a/components/printing/renderer/print_web_view_helper.h b/components/printing/renderer/print_web_view_helper.h
index e603411a8784068311074447e3dcad2177ce2d5e..7c1fdbde648ddd2aac02f3c27f74d787c017953f 100644
--- a/components/printing/renderer/print_web_view_helper.h
+++ b/components/printing/renderer/print_web_view_helper.h
@@ -290,7 +290,8 @@ class PrintWebViewHelper
                          blink::WebLocalFrame* frame,
                          PdfMetafileSkia* metafile,
                          gfx::Size* page_size_in_dpi,
-                         gfx::Rect* content_area_in_dpi);
+                         gfx::Rect* content_area_in_dpi,
+                         gfx::Rect* printable_area_in_dpi);
 #endif  // defined(OS_MACOSX)
 
   // Platform specific helper function for rendering page(s) to |metafile|.
@@ -382,6 +383,7 @@ class PrintWebViewHelper
   bool reset_prep_frame_view_;
 
   std::unique_ptr<PrintMsg_PrintPages_Params> print_pages_params_;
+  gfx::Rect printer_printable_area_;
   bool is_print_ready_metafile_sent_;
   bool ignore_css_margins_;