Use document from preview for System Dialog printing on Windows.

chrome/renderer/chrome_mock_render_thread.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_RENDERER_CHROME_MOCK_RENDER_THREAD_H_
 #define CHROME_RENDERER_CHROME_MOCK_RENDER_THREAD_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 78 matching lines @@
       const PrintHostMsg_DidGetPreviewPageCount_Params& params);
   void OnDidPreviewPage(const PrintHostMsg_DidPreviewPage_Params& params);
   void OnCheckForCancel(int32 preview_ui_id,
                         int preview_request_id,
                         bool* cancel);
 
 
   // For print preview, PrintWebViewHelper will update settings.
   void OnUpdatePrintSettings(int document_cookie,
                              const base::DictionaryValue& job_settings,
-                             PrintMsg_PrintPages_Params* params);
+                             PrintMsg_PrintPages_Params* params,
+                             bool* canceled);
 
   // A mock printer device used for printing tests.
   scoped_ptr<MockPrinter> printer_;
 
   // True to simulate user clicking print. False to cancel.
   bool print_dialog_user_response_;
 
   // Simulates cancelling print preview if |print_preview_pages_remaining_|
   // equals this.
   int print_preview_cancel_page_number_;
 
   // Number of pages to generate for print preview.
   int print_preview_pages_remaining_;
 #endif
 
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMockRenderThread);
 };
 
 #endif  // CHROME_RENDERER_CHROME_MOCK_RENDER_THREAD_H_