SkEncodedInfo: simplify

include/codec/SkEncodedInfo.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkEncodedInfo_DEFINED
 #define SkEncodedInfo_DEFINED
 
@@ skipping 173 matching lines @@
     }
 
 private:
 
     SkEncodedInfo(Color color, Alpha alpha, uint8_t bitsPerComponent)
         : fColor(color)
         , fAlpha(alpha)
         , fBitsPerComponent(bitsPerComponent)
     {}
 
-    void setColor(Color color) {
-        fColor = color;
-    }
-
     Color   fColor;
     Alpha   fAlpha;
     uint8_t fBitsPerComponent;
-
-    friend class SkJpegCodec;
 };
 
 #endif