Refactor read and write buffers.

include/effects/SkLightingImageFilter.h

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLightingImageFilter_DEFINED
 #define SkLightingImageFilter_DEFINED
 
@@ skipping 56 matching lines @@
         SkScalar shininess, SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     ~SkLightingImageFilter();
 
     SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
 
 protected:
     SkLightingImageFilter(SkLight* light,
                           SkScalar surfaceScale,
                           SkImageFilter* input,
                           const CropRect* cropRect = NULL);
-    explicit SkLightingImageFilter(SkFlattenableReadBuffer& buffer);
-    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
+    explicit SkLightingImageFilter(SkReadBuffer& buffer);
+    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
     const SkLight* light() const { return fLight; }
     SkScalar surfaceScale() const { return fSurfaceScale; }
 
 private:
     typedef SkImageFilter INHERITED;
     SkLight* fLight;
     SkScalar fSurfaceScale;
 };
 
 #endif