Remove SkDevice and SkBaseDevice outside skia/ext/

printing/metafile_skia_wrapper.cc

 // 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.
 
 #include "printing/metafile_skia_wrapper.h"
 #include "skia/ext/platform_device.h"
 #include "skia/ext/refptr.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkDevice.h"
 #include "third_party/skia/include/core/SkMetaData.h"
 
+class SkCanvas;
+
 namespace printing {
 
 namespace {
 
 const char* kMetafileKey = "CrMetafile";
 
 }  // namespace
 
 // static
 void MetafileSkiaWrapper::SetMetafileOnCanvas(const SkCanvas& canvas,
@@ skipping 15 matching lines @@
     return NULL;
 
   return static_cast<MetafileSkiaWrapper*>(value)->metafile_;
 }
 
 MetafileSkiaWrapper::MetafileSkiaWrapper(PdfMetafileSkia* metafile)
     : metafile_(metafile) {
 }
 
 }  // namespace printing