Update mojo sdk to rev f84766d3b6420b7cf6a113d9d65d73cb5fe18d90

third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl

Index: third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
diff --git a/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl b/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
index 0c4443e398749cd0d96d0b5a7b62b4eacc730ba4..d12c54b43eccad7a5a0182ee9bd27112be2a15de 100644
--- a/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
+++ b/third_party/mojo/src/mojo/public/tools/bindings/generators/cpp_templates/validation_macros.tmpl
@@ -25,9 +25,26 @@ if (!{{field.kind|cpp_wrapper_type}}::Data_::Validate(
 }
 {%- endmacro %}
 
+{%- macro validate_handle(field_expr, field, object_name) -%}
+  const mojo::Handle {{field.name}}_handle(object->data.f_{{field.name}});
+
+{%-   if not field.kind|is_nullable_kind %}
+  if ({{field.name}}_handle.value() == mojo::internal::kEncodedInvalidHandleValue) {
+    ReportValidationError(
+        mojo::internal::VALIDATION_ERROR_UNEXPECTED_INVALID_HANDLE,
+        "invalid {{field.name}} field in {{object_name}}");
+    return false;
+  }
+{%-   endif %}
+  if (!bounds_checker->ClaimHandle({{field.name}}_handle)) {
+    ReportValidationError(mojo::internal::VALIDATION_ERROR_ILLEGAL_HANDLE);
+    return false;
+  }
+{%- endmacro -%}
+
 {%- macro validate_union_field(field, union) %}
 {%-   set field_expr = "(reinterpret_cast<const "
-    ~ field.kind|cpp_field_type
+    ~ field.kind|cpp_union_field_type
     ~ "*>(&object->data.f_"
     ~ field.name
     ~ "))" -%}
@@ -41,5 +58,9 @@ if (!{{field.kind|cpp_wrapper_type}}::Data_::Validate(
 {%-   if field.kind|is_array_kind or field.kind|is_string_kind -%}
 {{      validate_array_or_string(field_expr, field) }}
 {%-   endif %}
+
+{%-   if field.kind|is_any_handle_kind -%}
+{{      validate_handle(field_expr, field, union.name) }}
+{%-   endif %}
 return true;
 {%- endmacro %}