clean up printing::Image and printing::Metafile

printing/pdf_metafile_cg_mac.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 PRINTING_PDF_METAFILE_CG_MAC_H_
 #define PRINTING_PDF_METAFILE_CG_MAC_H_
 
 #include <ApplicationServices/ApplicationServices.h>
 #include <CoreFoundation/CoreFoundation.h>
 #include <stdint.h>
@@ skipping 51 matching lines @@
   //
   // |autorotate| specifies whether the source PDF should be autorotated to fit
   // on the destination page.
   struct RenderPageParams {
     bool shrink_to_fit = false;
     bool stretch_to_fit = false;
     bool center_horizontally = false;
     bool center_vertically = false;
     bool autorotate = false;
   };
+  // Renders the given page from this metafile into |rect| in the given context.
+  // Pages use a 1-based index. The rendering uses the arguments in
+  // |params| to determine scaling, translation, and rotation.
+  bool OnRenderPage(unsigned int page_number,
+                    CGContextRef context,
+                    const CGRect rect,
+                    const RenderPageParams& params);
+
   // Renders the given page from |src_buffer| into |rect| in the given context.
   // Pages use a 1-based index. The rendering uses the arguments in
   // |params| to determine scaling, translation, and rotation.
   static bool RenderPage(const std::vector<char>& src_buffer,
                          unsigned int page_number,
                          CGContextRef context,
                          const CGRect rect,
                          const RenderPageParams& params);
 
  private:
@@ skipping 11 matching lines @@
 
   // Whether or not a page is currently open.
   bool page_is_open_;
 
   DISALLOW_COPY_AND_ASSIGN(PdfMetafileCg);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PDF_METAFILE_CG_MAC_H_