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 0331be7ad31ae16ddb8b7adfd49e31ae30db566f..3d469420ebcc9f3323cc11754afbc446a77b7773 100644
--- a/ui/gfx/color_space.h
+++ b/ui/gfx/color_space.h
@@ -168,11 +168,6 @@ 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;