Use JS Date().toLocaleDateString() to format date in header.

chrome/browser/printing/printing_message_filter.cc

Index: chrome/browser/printing/printing_message_filter.cc
diff --git a/chrome/browser/printing/printing_message_filter.cc b/chrome/browser/printing/printing_message_filter.cc
index 5b48b891b85b0aa715f72bc40615af2dba2f786c..abd6b104e4319ed89107feba897542bf85c17b06 100644
--- a/chrome/browser/printing/printing_message_filter.cc
+++ b/chrome/browser/printing/printing_message_filter.cc
@@ -82,7 +82,6 @@ void RenderParamsFromPrintSettings(const printing::PrintSettings& settings,
   params->supports_alpha_blend = settings.supports_alpha_blend();
   params->should_print_backgrounds = settings.should_print_backgrounds;
   params->display_header_footer = settings.display_header_footer;
-  params->date = settings.date;
   params->title = settings.title;
   params->url = settings.url;
 }