PrintPreview: Hide/Show the header footer option based on print frame margins.

chrome/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 CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 146 matching lines @@
   // Returns true if the current destination printer is PRINT_TO_PDF.
   bool IsPrintToPdfRequested(const base::DictionaryValue& settings);
 
   // Initiate print preview.
   void OnInitiatePrintPreview();
 
   // Start the process of generating a print preview using |settings|.
   void OnPrintPreview(const base::DictionaryValue& settings);
 
   // Initialize the print preview document.
-  bool CreatePreviewDocument();
+  bool CreatePreviewDocument(int margins_type);
 
   // Renders a print preview page. |page_number| is 0-based.
   // Returns true if print preview should continue, false on failure.
   bool RenderPreviewPage(int page_number);
 
   // Finalize the print ready preview document.
   bool FinalizePrintReadyDocument();
 
   // Print / preview the node under the context menu.
   void OnPrintNodeUnderContextMenu();
@@ skipping 283 matching lines @@
 
     State state_;
   };
 
   PrintPreviewContext print_preview_context_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_