Mojo C++ bindings: switch the existing usage of StructTraits to use the new data view interface.

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

Index: mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_definition.tmpl
diff --git a/mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_definition.tmpl b/mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_definition.tmpl
index 9eaf47735be75a6bff8c8f0f0bdcfd5fc4b7869c..2bd7ceb337dbfb7f7fef8fdc0158b68060132605 100644
--- a/mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_definition.tmpl
+++ b/mojo/public/tools/bindings/generators/cpp_templates/wrapper_class_definition.tmpl
@@ -27,45 +27,3 @@
   return rv;
 }
 {%  endif %}
-
-{{struct.name}}_Reader::{{struct.name}}_Reader(
-    internal::{{struct.name}}_Data*  data,
-    mojo::internal::SerializationContext* context)
-    : data_(data), context_(context) { }
-
-{%- for pf in struct.packed.packed_fields_in_ordinal_order %}
-{%-   set name = pf.field.name -%}
-{%-   set kind = pf.field.kind %}
-{%-   if kind|is_nullable_kind %}
-bool {{struct.name}}_Reader::has_{{name}}() const {
-{%-  if kind|is_union_kind %}
-  return !data_->{{name}}.is_null();
-{%-  elif kind|is_object_kind %}
-  return data_->{{name}}.ptr != nullptr;
-{%-  elif kind|is_interface_kind %}
-  return data_->{{name}}.handle.is_valid();
-{%-  elif kind|is_interface_request_kind %}
-  return data_->{{name}}.is_valid();
-{%-  elif kind|is_associated_interface_kind %}
-  return data_->{{name}}.interface_id == mojo::internal::kInvalidInterfaceId;
-{%-  elif kind|is_associated_interface_request_kind %}
-  return data_->{{name}} == mojo::internal::kInvalidInterfaceId;
-{%-  elif kind|is_any_handle_kind %}
-  return data_->{{name}}.is_valid();
-{%-  else %}
-  return !!data_->{{name}};
-{%-   endif %}
-}
-{%-   endif %}
-{%-   if kind|is_struct_kind and not kind|is_native_only_kind %}
-{{kind|get_name_for_kind}}_Reader {{struct.name}}_Reader::{{name}}() const {
-  return {{kind|get_name_for_kind}}_Reader(data_->{{name}}.ptr, context_);
-}
-{%-   elif kind|is_string_kind %}
-base::StringPiece {{struct.name}}_Reader::{{name}}() const {
-  DCHECK(data_->{{name}}.ptr);
-  return base::StringPiece(data_->{{name}}.ptr->storage(),
-                           data_->{{name}}.ptr->size());
-}
-{%-   endif %}
-{%- endfor %}