Revert of printing::Metafile: Simplify OS_MACOSX-specific code path

printing/metafile.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_METAFILE_H_
 #define PRINTING_METAFILE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "printing/native_drawing_context.h"
 #include "printing/printing_export.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
+#elif defined(OS_MACOSX)
+#include <ApplicationServices/ApplicationServices.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include "base/mac/scoped_cftyperef.h"
 #endif
 
 namespace base {
 class File;
 }
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace printing {
 
 // This class plays metafiles from data stream (usually PDF or EMF).
 class PRINTING_EXPORT MetafilePlayer {
  public:
+#if defined(OS_MACOSX)
+  // |shrink_to_fit| specifies whether the output should be shrunk to fit a
+  // destination page if the source PDF is bigger than the destination page in
+  // any dimension. If this is false, parts of the source PDF page that lie
+  // outside the bounds will be clipped.
+  // |stretch_to_fit| specifies whether the output should be stretched to fit
+  // the destination page if the source page size is smaller in all dimensions.
+  // |center_horizontally| specifies whether the output (after any scaling is
+  // done) should be centered horizontally within the destination page.
+  // |center_vertically| specifies whether the output (after any scaling is
+  // done) should be centered vertically within the destination page.
+  // Note that all scaling preserves the original aspect ratio of the page.
+  // |autorotate| specifies whether the source PDF should be autorotated to fit
+  // on the destination page.
+  struct MacRenderPageParams {
+    MacRenderPageParams()
+        : shrink_to_fit(false),
+          stretch_to_fit(false),
+          center_horizontally(false),
+          center_vertically(false),
+          autorotate(false) {
+    }
+
+    bool shrink_to_fit;
+    bool stretch_to_fit;
+    bool center_horizontally;
+    bool center_vertically;
+    bool autorotate;
+  };
+#endif  // defined(OS_MACOSX)
   MetafilePlayer();
   virtual ~MetafilePlayer();
 
 #if defined(OS_WIN)
   // The slow version of Playback(). It enumerates all the records and play them
   // back in the HDC. The trick is that it skip over the records known to have
   // issue with some printers. See Emf::Record::SafePlayback implementation for
   // details.
   virtual bool SafePlayback(skia::NativeDrawingContext hdc) const = 0;
+
+#elif defined(OS_MACOSX)
+  // Renders the given page 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.
+  virtual bool RenderPage(unsigned int page_number,
+                          skia::NativeDrawingContext context,
+                          const CGRect rect,
+                          const MacRenderPageParams& params) const = 0;
 #endif  // if defined(OS_WIN)
 
   // Populates the buffer with the underlying data. This function should ONLY be
   // called after the metafile is closed. Returns true if writing succeeded.
   virtual bool GetDataAsVector(std::vector<char>* buffer) const = 0;
 
   // Saves the underlying data to the given file. This function should ONLY be
   // called after the metafile is closed. Returns true if writing succeeded.
   virtual bool SaveTo(base::File* file) const = 0;
 
@@ skipping 66 matching lines @@
   bool GetDataAsVector(std::vector<char>* buffer) const override;
   bool SaveTo(base::File* file) const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Metafile);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_METAFILE_H_