mojo: Make EqualsTraits<> part of public C++ API

mojo/public/tools/bindings/generators/cpp_templates/wrapper_union_class_template_definition.tmpl

Index: mojo/public/tools/bindings/generators/cpp_templates/wrapper_union_class_template_definition.tmpl
diff --git a/mojo/public/tools/bindings/generators/cpp_templates/wrapper_union_class_template_definition.tmpl b/mojo/public/tools/bindings/generators/cpp_templates/wrapper_union_class_template_definition.tmpl
index 4c4851fa83589eb97defe9d2d8abfb41c4ce40dd..a29a1b7f552a233c4f469e5602e17c2ad94a87b7 100644
--- a/mojo/public/tools/bindings/generators/cpp_templates/wrapper_union_class_template_definition.tmpl
+++ b/mojo/public/tools/bindings/generators/cpp_templates/wrapper_union_class_template_definition.tmpl
@@ -30,9 +30,9 @@ bool {{union.name}}::Equals(const T& other) const {
     case Tag::{{field.name|upper}}:
 {%-   if field.kind|is_object_kind or
          field.kind|is_any_handle_or_interface_kind %}
-      return mojo::internal::Equals(*(data_.{{field.name}}), *(other.data_.{{field.name}}));
+      return mojo::Equals(*(data_.{{field.name}}), *(other.data_.{{field.name}}));
 {%-   else %}
-      return mojo::internal::Equals(data_.{{field.name}}, other.data_.{{field.name}});
+      return mojo::Equals(data_.{{field.name}}, other.data_.{{field.name}});
 {%-   endif %}
 {%- endfor %}
   };