Cleanup NativeMetafile (win) interface and EMF class.

printing/native_metafile.h

Index: printing/native_metafile.h
diff --git a/printing/native_metafile.h b/printing/native_metafile.h
index 65f9f4c85863d2e2cad06cbd05b05a2c32c35ab2..e77588746ae464b213486ada09d74688cafe83b3 100644
--- a/printing/native_metafile.h
+++ b/printing/native_metafile.h
@@ -101,29 +101,6 @@ class NativeMetafile {
   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