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..37e09e0cf092d08f312ffb1d8c776ab4d93c2191 100644
--- a/printing/printing_context_win.cc
+++ b/printing/printing_context_win.cc
@@ -11,6 +11,7 @@
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
+#include "base/values.h"
 #include "printing/print_settings_initializer_win.h"
 #include "printing/printed_document.h"
 #include "skia/ext/platform_device_win.h"
@@ -208,6 +209,17 @@ PrintingContext::Result PrintingContextWin::UseDefaultSettings() {
   return ParseDialogResult(dialog_options);
 }
 
+PrintingContext::Result PrintingContextWin::UpdatePrintSettings(
+    const DictionaryValue* 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_);