cc: Use SkCreateColorSpaceXformCanvas for color transforms

ui/gfx/color_space.h

Index: ui/gfx/color_space.h
diff --git a/ui/gfx/color_space.h b/ui/gfx/color_space.h
index 8a05ba0e2bb77df195a89fa22f549b3d29d1dd33..a7714a3a96b9d4cab22ed3966d68e0b72542ae5b 100644
--- a/ui/gfx/color_space.h
+++ b/ui/gfx/color_space.h
@@ -165,11 +165,6 @@ class GFX_EXPORT ColorSpace {
   // range, and unspecified spaces.
   sk_sp<SkColorSpace> ToSkColorSpace() const;
 
-  // Return an SkColorSpace that represents this color space, with output-space
-  // blending (which is only linear for color spaces with a linear tranasfer
-  // function).
-  sk_sp<SkColorSpace> ToNonlinearBlendedSkColorSpace() const;
-
   // Populate |icc_profile| with an ICC profile that represents this color
   // space. Returns false if this space is not representable.
   bool GetICCProfile(ICCProfile* icc_profile) const;