Cleanup NativeMetafile (win) interface and EMF class.

printing/native_metafile.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_NATIVE_METAFILE_H_
 #define PRINTING_NATIVE_METAFILE_H_
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 80 matching lines @@
   virtual bool SaveTo(const FilePath& file_path) const = 0;
 
   // Returns the bounds of the given page. Pages use a 1-based index.
   virtual gfx::Rect GetPageBounds(unsigned int page_number) const = 0;
   virtual unsigned int GetPageCount() const = 0;
 
   // Get the context for rendering to the PDF.
   virtual gfx::NativeDrawingContext context() const = 0;
 
 #if defined(OS_WIN)
-  // Generates a virtual HDC that will record every GDI commands and compile it
-  // in a EMF data stream.
-  // hdc is used to setup the default DPI and color settings. hdc is optional.
-  // rect specifies the dimensions (in .01-millimeter units) of the EMF. rect is
-  // optional.
-  virtual bool CreateDc(gfx::NativeDrawingContext sibling,
-                        const RECT* rect) = 0;
-
-  // Similar to the above method but the metafile is backed by a file.
-  virtual bool CreateFileBackedDc(gfx::NativeDrawingContext sibling,
-                                  const RECT* rect,
-                                  const FilePath& path) = 0;
-
-  // TODO(maruel): CreateFromFile(). If ever used. Maybe users would like to
-  // have the ability to save web pages to an EMF file? Afterward, it is easy to
-  // convert to PDF or PS.
-  // Load a metafile fromdisk.
-  virtual bool CreateFromFile(const FilePath& metafile_path) = 0;
-
-  // Closes the HDC created by CreateDc() and generates the compiled EMF
-  // data.
-  virtual void CloseEmf() = 0;
-
   // "Plays" the EMF buffer in a HDC. It is the same effect as calling the
   // original GDI function that were called when recording the EMF. |rect| is in
   // "logical units" and is optional. If |rect| is NULL, the natural EMF bounds
   // are used.
   // Note: Windows has been known to have stack buffer overflow in its GDI
   // functions, whether used directly or indirectly through precompiled EMF
   // data. We have to accept the risk here. Since it is used only for printing,
   // it requires user intervention.
   virtual bool Playback(gfx::NativeDrawingContext hdc,
                         const RECT* rect) const = 0;
@@ skipping 43 matching lines @@
   // Returns true if writing succeeded.
   virtual bool SaveToFD(const base::FileDescriptor& fd) const = 0;
 #endif  // if defined(OS_CHROMEOS)
 
 #endif
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_NATIVE_METAFILE_H_