Print Preview: Hook up the print button to initiate printing without displaying a print dialog.

printing/printing_context_win.cc

Index: printing/printing_context_win.cc
diff --git a/printing/printing_context_win.cc b/printing/printing_context_win.cc
index 3d40739f99449ee18b2c71f5536fb4f996c8ebb7..882adf1e8f6c9c286e6b272f84adec46fa77a04e 100644
--- a/printing/printing_context_win.cc
+++ b/printing/printing_context_win.cc
@@ -208,6 +208,17 @@ PrintingContext::Result PrintingContextWin::UseDefaultSettings() {
   return ParseDialogResult(dialog_options);
 }
 
+PrintingContext::Result PrintingContextWin::UpdatePrintSettings(
+    const std::string& job_settings, const PageRanges& ranges) {
+  DCHECK(!in_print_job_);
+
+  settings_.ranges = ranges;
+
+  NOTIMPLEMENTED();
+
+  return FAILED;
+}
+
 PrintingContext::Result PrintingContextWin::InitWithSettings(
     const PrintSettings& settings) {
   DCHECK(!in_print_job_);