Cleanup: Remove unneeded forward declarations in printing, sandbox, and skia.

skia/ext/vector_platform_device_skia.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 SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_
 #define SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "skia/ext/platform_device.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkTScopedPtr.h"
 #include "third_party/skia/include/pdf/SkPDFDevice.h"
 
-class SkClipStack;
 class SkMatrix;
-struct SkIRect;
-struct SkRect;
 
 namespace skia {
 
 class BitmapPlatformDevice;
 
 class VectorPlatformDeviceSkia : public PlatformDevice, public SkPDFDevice {
  public:
   SK_API VectorPlatformDeviceSkia(const SkISize& pageSize,
                                   const SkISize& contentSize,
                                   const SkMatrix& initialTransform);
@@ skipping 17 matching lines @@
 
  private:
   SkRefPtr<BitmapPlatformDevice> raster_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(VectorPlatformDeviceSkia);
 };
 
 }  // namespace skia
 
 #endif  // SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_