PrintPreview: Honor the print media page size and margin values.

chrome/browser/printing/print_preview_message_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_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_
 #define CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "content/browser/tab_contents/tab_contents_observer.h"
@@ skipping 28 matching lines @@
   // Helper function to return the TabContentsWrapper for tab_contents().
   TabContentsWrapper* tab_contents_wrapper();
 
   // Common code between failure handlers. Returns a PrintPreviewUI* if there
   // exists a PrintPreviewUI to send messages to.
   PrintPreviewUI* OnFailure(int document_cookie);
 
   // Message handlers.
   void OnRequestPrintPreview(bool source_is_modifiable);
   void OnDidGetDefaultPageLayout(
-      const printing::PageSizeMargins& page_layout_in_points);
+      const printing::PageSizeMargins& page_layout_in_points,
+      bool has_custom_page_size_style);
   void OnDidGetPreviewPageCount(
       const PrintHostMsg_DidGetPreviewPageCount_Params& params);
   void OnDidPreviewPage(const PrintHostMsg_DidPreviewPage_Params& params);
   void OnMetafileReadyForPrinting(
       const PrintHostMsg_DidPreviewDocument_Params& params);
   void OnPrintPreviewFailed(int document_cookie);
   void OnPrintPreviewCancelled(int document_cookie);
   void OnInvalidPrinterSettings(int document_cookie);
 
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewMessageHandler);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_PREVIEW_MESSAGE_HANDLER_H_