Remove metafile casts.

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 <utility>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/shared_memory.h"
 #include "base/time.h"
 #include "content/renderer/render_view_observer.h"
 #include "content/renderer/render_view_observer_tracker.h"
 #include "printing/metafile.h"
+#include "printing/metafile_impl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebViewClient.h"
 #include "ui/gfx/size.h"
 
 struct PrintMsg_Print_Params;
 struct PrintMsg_PrintPage_Params;
 struct PrintMsg_PrintPages_Params;
 
 namespace base {
@@ skipping 312 matching lines @@
     // Helper functions
     int GetNextPageNumber();
     bool IsReadyToRender() const;
     bool IsBusy() const;
     bool IsModifiable() const;
 
     // Getters
     WebKit::WebFrame* frame() const;
     WebKit::WebNode* node() const;
     int total_page_count() const;
-    printing::Metafile* metafile() const;
+    printing::PreviewMetafile* metafile() const;
     const PrintMsg_Print_Params& print_params() const;
     const gfx::Size& GetPrintCanvasSize() const;
 
    private:
     enum State {
       UNINITIALIZED,  // Not ready to render.
       INITIALIZED,    // Ready to render.
       RENDERING,      // Rendering.
       DONE            // Finished rendering.
     };
 
     // Reset some of the internal rendering context.
     void ClearContext();
 
     // Specifies what to render for print preview.
     WebKit::WebFrame* frame_;
     scoped_ptr<WebKit::WebNode> node_;
 
     scoped_ptr<PrepareFrameAndViewForPrint> prep_frame_view_;
-    scoped_ptr<printing::Metafile> metafile_;
+    scoped_ptr<printing::PreviewMetafile> metafile_;
     scoped_ptr<PrintMsg_Print_Params> print_params_;
 
     // Total page count in the renderer.
     int total_page_count_;
 
     // Number of pages to render.
     int actual_page_count_;
 
     // The current page to render.
     int current_page_number_;
 
     // |rendered_pages_| tracks which pages need to be printed as well as
     // the page slot it should be printed in. See GetPageSlotForPage.
     typedef std::pair<bool, int> PreviewPageInfo;
     std::vector<PreviewPageInfo> rendered_pages_;
 
     base::TimeDelta document_render_time_;
     base::TimeTicks begin_time_;
 
     State state_;
   };
 
   PrintPreviewContext print_preview_context_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_