PrintPreview: Implement GetMetafileForCurrentPage() function in PdfMetafileSkia.

printing/pdf_metafile_skia.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 PRINTING_PDF_METAFILE_SKIA_H_
 #define PRINTING_PDF_METAFILE_SKIA_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
@@ skipping 50 matching lines @@
                           bool shrink_to_fit,
                           bool stretch_to_fit,
                           bool center_horizontally,
                           bool center_vertically) const;
 #endif
 
 #if defined(OS_CHROMEOS)
   virtual bool SaveToFD(const base::FileDescriptor& fd) const;
 #endif  // if defined(OS_CHROMEOS)
 
+  // Return a new metafile containing just the current page in draft mode.
+  PdfMetafileSkia* GetMetafileForCurrentPage();
+
  private:
   scoped_ptr<PdfMetafileSkiaData> data_;
 
   // True when a draft version of metafile is requested.
   mutable bool draft_;
 
+  // True when finish page is outstanding for current page.
+  bool page_outstanding_;
+
   DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PDF_METAFILE_SKIA_H_