add customized printing setting for headless

content/browser/devtools/protocol/page_handler.cc

Index: content/browser/devtools/protocol/page_handler.cc
diff --git a/content/browser/devtools/protocol/page_handler.cc b/content/browser/devtools/protocol/page_handler.cc
index def6fe326213508213832bbc40f22c43e8424a6f..6d334431d50f06ea553e7e8b99ff7cbeafac4f5c 100644
--- a/content/browser/devtools/protocol/page_handler.cc
+++ b/content/browser/devtools/protocol/page_handler.cc
@@ -298,7 +298,20 @@ void PageHandler::CaptureScreenshot(
       from_surface.fromMaybe(false));
 }
 
-void PageHandler::PrintToPDF(std::unique_ptr<PrintToPDFCallback> callback) {
+void PageHandler::PrintToPDF(Maybe<bool> landscape,
+                             Maybe<bool> display_header_footer,
+                             Maybe<bool> print_backgrounds,
+                             Maybe<double> scale,
+                             Maybe<String> unit,
+                             Maybe<String> paper_type,
+                             Maybe<double> paper_width,
+                             Maybe<double> paper_height,
+                             Maybe<double> margin_top,
+                             Maybe<double> margin_bottom,
+                             Maybe<double> margin_left,
+                             Maybe<double> margin_right,
+                             Maybe<String> page_ranges,
+                             std::unique_ptr<PrintToPDFCallback> callback) {
   callback->sendFailure(Response::Error("PrintToPDF is not implemented"));
   return;
 }