Fix for potential typedef issue

include/effects/SkLerpXfermode.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 SkLerpXfermode_DEFINED
 #define SkLerpXfermode_DEFINED
 
 #include "SkXfermode.h"
 
 class SK_API SkLerpXfermode : public SkXfermode {
+    typedef SkXfermode INHERITED;
+
 public:
     /**
      *  result = scale * src + (1 - scale) * dst
      *
      *  When scale == 1, this is the same as kSrc_Mode
      *  When scale == 0, this is the same as kDst_Mode
      */
     static SkXfermode* Create(SkScalar scale);
 
     // overrides from SkXfermode
     virtual void xfer32(SkPMColor dst[], const SkPMColor src[], int count,
                         const SkAlpha aa[]) const SK_OVERRIDE;
     virtual void xfer16(uint16_t dst[], const SkPMColor src[], int count,
                         const SkAlpha aa[]) const SK_OVERRIDE;
     virtual void xferA8(SkAlpha dst[], const SkPMColor src[], int count,
                         const SkAlpha aa[]) const SK_OVERRIDE;
 
     SK_DEVELOPER_TO_STRING()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLerpXfermode)
 
 protected:
     SkLerpXfermode(SkFlattenableReadBuffer&);
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
 
 private:
     SkLerpXfermode(unsigned scale256);
 
     unsigned fScale256;  // 0..256
-
-    typedef SkXfermode INHERITED;
 };
 
 #endif