Refactor read and write buffers.

src/core/SkValidatingReadBuffer.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 SkValidatingReadBuffer_DEFINED
 #define SkValidatingReadBuffer_DEFINED
 
 #include "SkRefCnt.h"
 #include "SkBitmapHeap.h"
-#include "SkFlattenableBuffers.h"
+#include "SkReadBuffer.h"
+#include "SkWriteBuffer.h"
 #include "SkPath.h"
 #include "SkPicture.h"
 #include "SkReader32.h"
 
 class SkBitmap;
 
-class SkValidatingReadBuffer : public SkFlattenableReadBuffer {
+class SkValidatingReadBuffer : public SkReadBuffer {
 public:
     SkValidatingReadBuffer(const void* data, size_t size);
     virtual ~SkValidatingReadBuffer();
 
     const void* skip(size_t size);
 
     // primitives
     virtual bool readBool() SK_OVERRIDE;
     virtual SkColor readColor() SK_OVERRIDE;
     virtual SkFixed readFixed() SK_OVERRIDE;
@@ skipping 39 matching lines @@
 
     void setMemory(const void* data, size_t size);
 
     static bool IsPtrAlign4(const void* ptr) {
         return SkIsAlign4((uintptr_t)ptr);
     }
 
     SkReader32 fReader;
     bool fError;
 
-    typedef SkFlattenableReadBuffer INHERITED;
+    typedef SkReadBuffer INHERITED;
 };
 
 #endif // SkValidatingReadBuffer_DEFINED