Print Preview: Support the duplex preset in PDFs.

components/printing/renderer/print_web_view_helper.h

 // Copyright (c) 2012 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 COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 203 matching lines @@
   // Initialize print page settings with default settings.
   // Used only for native printing workflow.
   bool InitPrintSettings(bool fit_to_paper_size);
 
   // Calculate number of pages in source document.
   bool CalculateNumberOfPages(blink::WebLocalFrame* frame,
                               const blink::WebNode& node,
                               int* number_of_pages);
 
   // Set options for print preset from source PDF document.
-  void SetOptionsFromDocument(
-      PrintHostMsg_SetOptionsFromDocument_Params& params);
+  void SetOptionsFromPdfDocument(
+      PrintHostMsg_SetOptionsFromDocument_Params* options);
 
   // Update the current print settings with new |passed_job_settings|.
   // |passed_job_settings| dictionary contains print job details such as printer
   // name, number of copies, page range, etc.
   bool UpdatePrintSettings(blink::WebLocalFrame* frame,
                            const blink::WebNode& node,
                            const base::DictionaryValue& passed_job_settings);
 
   // Get final print settings from the user.
   // Return false if the user cancels or on error.
@@ skipping 265 matching lines @@
   base::Closure on_stop_loading_closure_;
 
   base::WeakPtrFactory<PrintWebViewHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 }  // namespace printing
 
 #endif  // COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_