Miscellaneous color space refactors

src/opts/SkColorXform_opts.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 SkColorXform_opts_DEFINED
 #define SkColorXform_opts_DEFINED
 
@@ skipping 169 matching lines @@
             *((uint64_t*) dst) = rgba;
             dst = SkTAddOffset<void>(dst, sizeof(uint64_t));
         }
 
         src += 1;
         len -= 1;
     }
 }
 
 static void color_xform_RGB1_to_2dot2(uint32_t* dst, const uint32_t* src, int len,
-                                      const float* const srcTables[3], const float matrix[12]) {
+                                      const float* const srcTables[3], const float matrix[16]) {
     color_xform_RGB1<k2Dot2_DstGamma>(dst, src, len, srcTables, matrix, nullptr);
 }
 
 static void color_xform_RGB1_to_srgb(uint32_t* dst, const uint32_t* src, int len,
-                                     const float* const srcTables[3], const float matrix[12]) {
+                                     const float* const srcTables[3], const float matrix[16]) {
     color_xform_RGB1<kSRGB_DstGamma>(dst, src, len, srcTables, matrix, nullptr);
 }
 
 static void color_xform_RGB1_to_table(uint32_t* dst, const uint32_t* src, int len,
-                                      const float* const srcTables[3], const float matrix[12],
+                                      const float* const srcTables[3], const float matrix[16],
                                       const uint8_t* const dstTables[3]) {
     color_xform_RGB1<kTable_DstGamma>(dst, src, len, srcTables, matrix, dstTables);
 }
 
 static void color_xform_RGB1_to_linear(uint64_t* dst, const uint32_t* src, int len,
-                                       const float* const srcTables[3], const float matrix[12]) {
+                                       const float* const srcTables[3], const float matrix[16]) {
     color_xform_RGB1<kLinear_DstGamma>(dst, src, len, srcTables, matrix, nullptr);
 }
 
 }  // namespace SK_OPTS_NS
 
 #endif // SkColorXform_opts_DEFINED