Mojo C++ bindings: Merge EncodePointers/DecodePointers into Serialize/Deserialize, respectively.

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

 {%- import "validation_macros.tmpl" as validation_macros %}
 {%- set class_name = struct.name ~ "_Data" %}
 
 // static
 {{class_name}}* {{class_name}}::New(mojo::internal::Buffer* buf) {
   return new (buf->Allocate(sizeof({{class_name}}))) {{class_name}}();
 }
 
 // static
 bool {{class_name}}::Validate(
@@ skipping 55 matching lines @@
     return true;
 {%-     endif %}
 {%-     set field_expr = "object->" ~ packed_field.field.name %}
 {{validation_macros.validate_field(packed_field.field, field_expr, struct.name, true)}}
 {%-   endif %}
 {%- endfor %}
 
   return true;
 }
 
-void {{class_name}}::EncodePointers() {
-  CHECK(header_.version == {{struct.versions[-1].version}});
-{%- for pf in struct.packed.packed_fields_in_ordinal_order %}
-{%-   if pf.field.kind|is_union_kind %}
-  this->{{pf.field.name}}.EncodePointers();
-{%-   elif pf.field.kind|is_object_kind %}
-  mojo::internal::Encode(&this->{{pf.field.name}});
-{%-   endif %}
-{%- endfor %}
-}
-
-void {{class_name}}::DecodePointers() {
-  // NOTE: The memory backing |this| may be smaller than |sizeof(*this)|, if the
-  // message comes from an older version.
-{#- Before decoding fields introduced at a certain version, we need to add
-    a version check, which makes sure we skip further decoding if |this|
-    is from an earlier version. |last_checked_version| records the last
-    version that we have added such version check. #}
-{%- set last_checked_version = 0 %}
-{%- for pf in struct.packed.packed_fields_in_ordinal_order %}
-{%-   set name = pf.field.name %}
-{%-   set kind = pf.field.kind %}
-{%-   if kind|is_object_kind %}
-{%-     if pf.min_version > last_checked_version %}
-{%-       set last_checked_version = pf.min_version %}
-  if (header_.version < {{pf.min_version}})
-    return;
-{%-     endif %}
-{%-     if kind|is_union_kind %}
-  this->{{name}}.DecodePointers();
-{%-     elif kind|is_object_kind %}
-  mojo::internal::Decode(&this->{{name}});
-{%-     endif %}
-{%-   endif %}
-{%- endfor %}
-}
-
 {{class_name}}::{{class_name}}() {
   header_.num_bytes = sizeof(*this);
   header_.version = {{struct.versions[-1].version}};
 }