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

chrome/browser/ui/webui/print_preview_handler.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/print_preview_handler.h"
 
 #include <string>
 
 #include "base/base64.h"
 #if !defined(OS_CHROMEOS)
@@ skipping 877 matching lines @@
   wrapper->print_view_manager()->set_observer(NULL);
 }
 
 void PrintPreviewHandler::OnPrintPreviewFailed() {
   if (reported_failed_preview_)
     return;
   reported_failed_preview_ = true;
   ReportUserActionHistogram(PREVIEW_FAILED);
 }
 
+void PrintPreviewHandler::ShowSystemDialog() {
+  HandleShowSystemDialog(NULL);
+}
+
 void PrintPreviewHandler::FileSelected(const FilePath& path,
                                        int index, void* params) {
   PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(web_ui_);
   scoped_refptr<RefCountedBytes> data;
   print_preview_ui->GetPrintPreviewDataForIndex(
       printing::COMPLETE_PREVIEW_DOCUMENT_INDEX, &data);
   if (!data.get()) {
     NOTREACHED();
     return;
   }
@@ skipping 29 matching lines @@
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
      printing::PrintPreviewTabController::GetInstance();
   if (tab_controller)
     tab_controller->EraseInitiatorTabInfo(preview_tab());
 }