Remove SkDevice and SkBaseDevice outside skia/ext/

printing/pdf_metafile_skia.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_SKIA_H_
 #define PRINTING_PDF_METAFILE_SKIA_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
 #include "printing/metafile.h"
 #include "skia/ext/platform_canvas.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
-class SkBaseDevice;
-
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 namespace base {
 struct FileDescriptor;
 }
 #endif
 
 namespace printing {
 
 struct PdfMetafileSkiaData;
 
@@ skipping 54 matching lines @@
 
  private:
   scoped_ptr<PdfMetafileSkiaData> data_;
 
   DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PDF_METAFILE_SKIA_H_