cc: Add conversion between gfx::ColorSpace and SkColorSpace

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 6e351899e16fe3f4523a17f571c6e873d5eb6e26..9b9b1c0203859dd13ae7cbd8503aa209e8c9fcb9 100644
--- a/ui/gfx/color_space.h
+++ b/ui/gfx/color_space.h
@@ -17,6 +17,10 @@ template <class P>
 struct ParamTraits;
 }  // namespace IPC
 
+template <typename T>
+class sk_sp;
+class SkColorSpace;
+
 namespace gfx {
 
 class ICCProfile;
@@ -132,6 +136,9 @@ class GFX_EXPORT ColorSpace {
   bool operator!=(const ColorSpace& other) const;
   bool operator<(const ColorSpace& other) const;
 
+  // Note that this may return nullptr.
+  sk_sp<SkColorSpace> ToSkColorSpace() const;
+
  private:
   PrimaryID primaries_ = PrimaryID::UNSPECIFIED;
   TransferID transfer_ = TransferID::UNSPECIFIED;