Fix for potential typedef issue

include/effects/SkLerpXfermode.h

Index: include/effects/SkLerpXfermode.h
diff --git a/include/effects/SkLerpXfermode.h b/include/effects/SkLerpXfermode.h
index 6151f3d5a3e7f411fdb1c1c0b6c31203bf5f920a..2cfc5dae134a04779152a977f18ca29f5beb3dbb 100644
--- a/include/effects/SkLerpXfermode.h
+++ b/include/effects/SkLerpXfermode.h
@@ -11,6 +11,8 @@
 #include "SkXfermode.h"
 
 class SK_API SkLerpXfermode : public SkXfermode {
+    typedef SkXfermode INHERITED;
+
 public:
     /**
      *  result = scale * src + (1 - scale) * dst
@@ -39,8 +41,6 @@ private:
     SkLerpXfermode(unsigned scale256);
 
     unsigned fScale256;  // 0..256
-
-    typedef SkXfermode INHERITED;
 };
 
 #endif