Print Preview: Display a throbber when the user requests the system print

chrome/browser/tab_contents/render_view_context_menu.cc

Index: chrome/browser/tab_contents/render_view_context_menu.cc
diff --git a/chrome/browser/tab_contents/render_view_context_menu.cc b/chrome/browser/tab_contents/render_view_context_menu.cc
index 95a7bd360a6d9d1e1a792f3160a56eab95e8a44f..6179d3edf0e388bb464f1247c36b4101223497e0 100644
--- a/chrome/browser/tab_contents/render_view_context_menu.cc
+++ b/chrome/browser/tab_contents/render_view_context_menu.cc
@@ -1384,7 +1384,7 @@ void RenderViewContextMenu::ExecuteCommand(int id) {
         if (switches::IsPrintPreviewEnabled())
           tab_contents_wrapper->print_view_manager()->PrintPreviewNow();
         else
-          tab_contents_wrapper->print_view_manager()->PrintNow();
+          tab_contents_wrapper->print_view_manager()->PrintNow(NULL);
       } else {
         rvh->Send(new PrintMsg_PrintNodeUnderContextMenu(rvh->routing_id()));
       }