Remove SkEncodedInfo kPreSwizzled_Color from public API

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 46 matching lines @@
         kYUVA_Color,
 
         // JPEG
         // Photoshop actually writes inverted CMYK data into JPEGs, where zero
         // represents 100% ink coverage.  For this reason, we treat CMYK JPEGs
         // as having inverted CMYK.  libjpeg-turbo warns that this may break
         // other applications, but the CMYK JPEGs we see on the web expect to
         // be treated as inverted CMYK.
         kInvertedCMYK_Color,
         kYCCK_Color,
-
-        // Used internally to indicate that the decoding library has
-        // pre-swizzled to the desired output format.
-        kPreSwizzled_Color,
     };
 
     static SkEncodedInfo Make(Color color, Alpha alpha, int bitsPerComponent) {
         SkASSERT(1 == bitsPerComponent ||
                  2 == bitsPerComponent ||
                  4 == bitsPerComponent ||
                  8 == bitsPerComponent ||
                  16 == bitsPerComponent);
 
         switch (color) {
@@ skipping 119 matching lines @@
     }
 
     Color   fColor;
     Alpha   fAlpha;
     uint8_t fBitsPerComponent;
 
     friend class SkJpegCodec;
 };
 
 #endif