Optimize CMYK->RGBA (BGRA) transform for jpeg decodes

src/core/SkOpts.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 SkOpts_DEFINED
 #define SkOpts_DEFINED
 
@@ skipping 39 matching lines @@
                                           SkPMColor[],
                                           const int * [2],
                                           const SkScalar * [2],
                                           int,
                                           const SkColor*);
 
     extern SkMatrix::MapPtsProc matrix_translate, matrix_scale_translate, matrix_affine;
 
     // Swizzle input into some sort of 8888 pixel, {premul,unpremul} x {rgba,bgra}.
     typedef void (*Swizzle_8888)(uint32_t*, const void*, int);
-    extern Swizzle_8888 RGBA_to_BGRA,  // i.e. just swap RB
-                        RGBA_to_rgbA,  // i.e. just premultiply
-                        RGBA_to_bgrA,  // i.e. swap RB and premultiply
-                        RGB_to_RGB1,   // i.e. insert an opaque alpha
-                        RGB_to_BGR1,   // i.e. swap RB and insert an opaque alpha
-                        gray_to_RGB1,  // i.e. expand to color channels + an opaque alpha
-                        grayA_to_RGBA, // i.e. expand to color channels
-                        grayA_to_rgbA; // i.e. expand to color channels and premultiply
+    extern Swizzle_8888 RGBA_to_BGRA,          // i.e. just swap RB
+                        RGBA_to_rgbA,          // i.e. just premultiply
+                        RGBA_to_bgrA,          // i.e. swap RB and premultiply
+                        RGB_to_RGB1,           // i.e. insert an opaque alpha
+                        RGB_to_BGR1,           // i.e. swap RB and insert an opaque alpha
+                        gray_to_RGB1,          // i.e. expand to color channels + an opaque alpha
+                        grayA_to_RGBA,         // i.e. expand to color channels
+                        grayA_to_rgbA,         // i.e. expand to color channels and premultiply
+                        inverted_CMYK_to_RGB1, // i.e. convert color space
+                        inverted_CMYK_to_BGR1; // i.e. convert color space
 }
 
 #endif//SkOpts_DEFINED