sRGB color filter

Bug: skia:
Change-Id: I9f04b8ce778349218ccd55673bdd1d16a192383c
Reviewed-on: https://skia-review.googlesource.com/26422
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
diff --git a/gn/effects.gni b/gn/effects.gni
index 1e86d2f..f3a480d 100644
--- a/gn/effects.gni
+++ b/gn/effects.gni
@@ -56,6 +56,7 @@
   "$_src/effects/SkTableColorFilter.cpp",
   "$_src/effects/SkTableMaskFilter.cpp",
   "$_src/effects/SkTileImageFilter.cpp",
+  "$_src/effects/SkToSRGBColorFilter.cpp",
   "$_src/effects/SkXfermodeImageFilter.cpp",
 
   "$_src/shaders/SkPerlinNoiseShader.cpp",
@@ -112,5 +113,6 @@
   "$_include/effects/SkTableColorFilter.h",
   "$_include/effects/SkTableMaskFilter.h",
   "$_include/effects/SkTileImageFilter.h",
+  "$_include/effects/SkToSRGBColorFilter.h",
   "$_include/effects/SkXfermodeImageFilter.h",
 ]