Refactor read and write buffers.

include/effects/SkTransparentShader.h

 /*
  * Copyright 2006 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 SkTransparentShader_DEFINED
 #define SkTransparentShader_DEFINED
 
@@ skipping 11 matching lines @@
     virtual void    shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
 
     SK_DEVELOPER_TO_STRING()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTransparentShader)
 
 private:
     // these are a cache from the call to setContext()
     const SkBitmap* fDevice;
     uint8_t         fAlpha;
 
-    SkTransparentShader(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
+    SkTransparentShader(SkReadBuffer& buffer) : INHERITED(buffer) {}
 
     typedef SkShader INHERITED;
 };
 
 #endif