Refactor read and write buffers.

include/effects/SkTileImageFilter.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTileImageFilter_DEFINED
 #define SkTileImageFilter_DEFINED
 
@@ skipping 10 matching lines @@
     */
     SkTileImageFilter(const SkRect& srcRect, const SkRect& dstRect, SkImageFilter* input)
         : INHERITED(input), fSrcRect(srcRect), fDstRect(dstRect) {}
 
     virtual bool onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
                                SkBitmap* dst, SkIPoint* offset) SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTileImageFilter)
 
 protected:
-    explicit SkTileImageFilter(SkFlattenableReadBuffer& buffer);
+    explicit SkTileImageFilter(SkReadBuffer& buffer);
 
-    virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE;
+    virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE;
 
 private:
     SkRect fSrcRect;
     SkRect fDstRect;
 };
 
 #endif