PrintPreview: Make ctrl-shift-p start the native print flow.

chrome/browser/printing/print_view_manager.cc

Index: chrome/browser/printing/print_view_manager.cc
diff --git a/chrome/browser/printing/print_view_manager.cc b/chrome/browser/printing/print_view_manager.cc
index c9b8767b7e54f47579b99676476f68985e968619..b86573fcd8b428b4ba31be75c0755d003fe25617 100644
--- a/chrome/browser/printing/print_view_manager.cc
+++ b/chrome/browser/printing/print_view_manager.cc
@@ -88,6 +88,26 @@ bool PrintViewManager::PrintForSystemDialogNow() {
   return PrintNowInternal(new PrintMsg_PrintForSystemDialog(routing_id()));
 }
 
+bool PrintViewManager::AdvancedPrintNow() {
+  printing::PrintPreviewTabController* tab_controller =
+      printing::PrintPreviewTabController::GetInstance();
+  if (!tab_controller)
+    return false;
+  TabContents* print_preview_tab =
+      tab_controller->GetPrintPreviewForTab(tab_contents());
+  if (print_preview_tab) {
+    // Preview tab exist for current tab or current tab is preview tab.
+    if (!print_preview_tab->web_ui())
+      return false;
+    PrintPreviewUI* print_preview_ui =
+        static_cast<PrintPreviewUI*>(print_preview_tab->web_ui());
+    print_preview_ui->OnShowSystemDialog();
+    return true;
+  } else {
+    return PrintNow();
+  }
+}
+
 bool PrintViewManager::PrintPreviewNow() {
   return PrintNowInternal(new PrintMsg_InitiatePrintPreview(routing_id()));
 }