Fix the print preview regression bug caused by r98926.

chrome/renderer/print_web_view_helper.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_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 346 matching lines @@
     void Finished();
 
     // Cleanup after print preview fails.
     void Failed();
 
     // Helper functions
     int GetNextPageNumber();
     bool IsReadyToRender() const;
     bool IsModifiable() const;
     bool IsLastPageOfPrintReadyMetafile() const;
+    bool IsFinalPageRendered() const;
 
     // Setters
     void set_generate_draft_pages(bool generate_draft_pages);
 
     // Getters
     WebKit::WebFrame* frame() const;
     WebKit::WebNode* node() const;
     int total_page_count() const;
     bool generate_draft_pages();
     printing::PreviewMetafile* metafile() const;
@@ skipping 39 matching lines @@
 
     State state_;
   };
 
   PrintPreviewContext print_preview_context_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_