Mojo C++ bindings: more consistent Clone() and Equals().

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

 // static
 {{union.name}}Ptr {{union.name}}::New() {
   {{union.name}}Ptr rv;
   mojo::internal::StructHelper<{{union.name}}>::Initialize(&rv);
   return rv;
 }
 
 {{union.name}}::{{union.name}}() {
   // TODO(azani): Implement default values here when/if we support them.
   // TODO(azani): Set to UNKNOWN when unknown is implemented.
   SetActive(static_cast<Tag>(0));
 }
 
 {{union.name}}::~{{union.name}}() {
   DestroyActive();
 }
 
-{%  if union|is_cloneable_kind %}
-{{union.name}}Ptr {{union.name}}::Clone() const {
-  {{union.name}}Ptr rv(New());
-  switch (tag_) {
-{%    for field in union.fields %}
-    case Tag::{{field.name|upper}}:
-{%    if field.kind|is_string_kind %}
-      rv->set_{{field.name}}(*(data_.{{field.name}}));
-{%    elif field.kind|is_object_kind %}
-      rv->set_{{field.name}}(data_.{{field.name}}->Clone());
-{%-   else %}
-      rv->set_{{field.name}}(data_.{{field.name}});
-{%-   endif %}
-      break;
-{%-   endfor %}
-  };
-  return rv;
-}
-{%- endif %}
-
-bool {{union.name}}::Equals(const {{union.name}}& other) const {
-  if (tag_ != other.which()) {
-    return false;
-  }
-
-  switch (tag_) {
-{%  for field in union.fields %}
-    case Tag::{{field.name|upper}}:
-{%    if field.kind|is_object_kind or field.kind|is_any_handle_kind or
-         field.kind|is_interface_kind or field.kind|is_associated_kind %}
-      return mojo::internal::ValueTraits<{{field.kind|cpp_wrapper_type}}>::Equals(*(data_.{{field.name}}), *(other.data_.{{field.name}}));
-{%-   else %}
-      return mojo::internal::ValueTraits<{{field.kind|cpp_wrapper_type}}>::Equals(data_.{{field.name}}, other.data_.{{field.name}});
-{%-   endif %}
-{%- endfor %}
-  };
-
-  return false;
-}
-
 {%  for field in union.fields %}
 bool {{union.name}}::is_{{field.name}}() const {
   return tag_ == Tag::{{field.name|upper}};
 }
 
 {{field.kind|cpp_union_getter_return_type}} {{union.name}}::get_{{field.name}}() const {
   DCHECK(tag_ == Tag::{{field.name|upper}});
 {%    if field.kind|is_object_kind or field.kind|is_any_handle_kind or
          field.kind|is_interface_kind or field.kind|is_associated_kind %}
   return *(data_.{{field.name}});
@@ skipping 46 matching lines @@
 {%  for field in union.fields %}
     case Tag::{{field.name|upper}}:
 {%    if field.kind|is_object_kind or field.kind|is_any_handle_kind or
          field.kind|is_interface_kind or field.kind|is_associated_kind %}
       delete data_.{{field.name}};
 {%-   endif %}
       break;
 {%- endfor %}
   }
 }