Support sRGB dsts in opt code

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 56 matching lines @@
 
     // Blend ndst src pixels over dst, where both src and dst point to sRGB pixels (RGBA or BGRA).
     // If nsrc < ndst, we loop over src to create a pattern.
     extern void (*srcover_srgb_srgb)(uint32_t* dst, const uint32_t* src, int ndst, int nsrc);
 
     // Color xform RGB1 pixels.  Does not change byte ordering.
     extern void (*color_xform_RGB1_srgb_to_2dot2) (uint32_t* dst, const uint32_t* src, int len,
                                                    const float srcToDstMatrix[16]);
     extern void (*color_xform_RGB1_2dot2_to_2dot2)(uint32_t* dst, const uint32_t* src, int len,
                                                    const float srcToDstMatrix[16]);
+    extern void (*color_xform_RGB1_srgb_to_srgb) (uint32_t* dst, const uint32_t* src, int len,
+                                                  const float srcToDstMatrix[16]);
+    extern void (*color_xform_RGB1_2dot2_to_srgb)(uint32_t* dst, const uint32_t* src, int len,
+                                                  const float srcToDstMatrix[16]);
 }
 
 #endif//SkOpts_DEFINED