Refactor read and write buffers.

include/effects/SkLayerDrawLooper.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLayerDrawLooper_DEFINED
 #define SkLayerDrawLooper_DEFINED
 
@@ skipping 92 matching lines @@
     SkPaint* addLayerOnTop(const LayerInfo&);
 
     // overrides from SkDrawLooper
     virtual void init(SkCanvas*);
     virtual bool next(SkCanvas*, SkPaint* paint);
 
     SK_DEVELOPER_TO_STRING()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLayerDrawLooper)
 
 protected:
-    SkLayerDrawLooper(SkFlattenableReadBuffer&);
-    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
+    SkLayerDrawLooper(SkReadBuffer&);
+    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
 private:
     struct Rec {
         Rec*    fNext;
         SkPaint fPaint;
         LayerInfo fInfo;
     };
     Rec*    fRecs;
     Rec*    fTopRec;
     int     fCount;
 
     // state-machine during the init/next cycle
     Rec* fCurrRec;
 
     static void ApplyInfo(SkPaint* dst, const SkPaint& src, const LayerInfo&);
 
     class MyRegistrar : public SkFlattenable::Registrar {
     public:
         MyRegistrar();
     };
 
     typedef SkDrawLooper INHERITED;
 };
 
 #endif