Switch SkJpegCode to libjpeg-turbo

src/codec/SkJpegCodec.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkJpegCodec_DEFINED
 #define SkJpegCodec_DEFINED
 
@@ skipping 82 matching lines @@
      *                   takes ownership
      */
     SkJpegCodec(const SkImageInfo& srcInfo, SkStream* stream, JpegDecoderMgr* decoderMgr);
 
     /*
      * Handles rewinding the input stream if it is necessary
      */
     bool handleRewind();
 
     /*
+     * Checks if the conversion between the input image and the requested output
+     * image has been implemented
+     * Sets the output color space
+     */
+    bool setOutputColorSpace(const SkImageInfo& dst);
+
+    /*
      * Checks if we can scale to the requested dimensions and scales the dimensions
      * if possible
      */
     bool scaleToDimensions(uint32_t width, uint32_t height);
 
     /*
      * Create the swizzler based on the encoded format
      */
     void initializeSwizzler(const SkImageInfo& dstInfo, void* dst, size_t dstRowBytes,
             const Options& options);
 
     SkAutoTDelete<JpegDecoderMgr> fDecoderMgr;
-    SkAutoTDelete<SkSwizzler>     fSwizzler;
-    size_t                        fSrcRowBytes;
 
     friend class SkJpegScanlineDecoder;
 
     typedef SkCodec INHERITED;
 };
 
 #endif