PrintPreview:[MAC & WIN] Added code to show the native printer management dialog.

chrome/browser/ui/webui/print_preview_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_HANDLER_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 42 matching lines @@
   void HandlePrint(const ListValue* args);
 
   // Get the printer capabilities.
   // First element of |args| is the printer name.
   void HandleGetPrinterCapabilities(const ListValue* args);
 
   // Ask the initiator renderer to show the native print system dialog.
   // |args| is unused.
   void HandleShowSystemDialog(const ListValue* args);
 
+  // Ask the browser to show the native printer management dialog.
+  // |args| is unused.
+  void HandleManagePrinters(const ListValue* args);
+
   // Send the printer capabilities to the Web UI.
   // |settings_info| contains printer capabilities information.
   void SendPrinterCapabilities(const DictionaryValue& settings_info);
 
   // Send the list of printers to the Web UI.
   void SendPrinterList(const ListValue& printers,
                        const FundamentalValue& default_printer_index);
 
   // Helper function to get the initiator tab for the print preview tab.
   TabContents* GetInitiatorTab();
 
   // Helper function to close the print preview tab.
   void ClosePrintPreviewTab();
 
   // Pointer to current print system.
   scoped_refptr<printing::PrintBackend> print_backend_;
 
   // The underlying dialog object.
   scoped_refptr<SelectFileDialog> select_file_dialog_;
 
   static FilePath* last_saved_path_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_HANDLER_H_