More status fixes

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index 021c395151ca40979038e7fa67e1a413143885bb..974d5d66ac03e8ab77084302c2923645bd168afb 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -412,14 +412,21 @@ window_nosuchmethod_test: StaticWarning
 js_typed_interop_default_arg_test/default_value: MissingCompileTimeError # Issue #25759
 
 [ $compiler == dart2js && $fast_startup ]
+custom/attribute_changed_callback_test/fully_supported: Fail # custom elements not supported
+custom/attribute_changed_callback_test/unsupported_on_polyfill: Fail # custom elements not supported
 custom/constructor_calls_created_synchronously_test: Fail # mirrors not supported
+custom/document_register_type_extensions_test/construction: Fail # custom elements not supported
+custom/document_register_type_extensions_test/functional: Fail # custom elements not supported
+custom/document_register_type_extensions_test/namespaces: Fail # custom elements not supported
+custom/document_register_type_extensions_test/parsing: Fail # custom elements not supported
+custom/document_register_type_extensions_test/registration: Fail # custom elements not supported
 custom/js_custom_test: Fail # mirrors not supported
 custom/mirrors_test: Fail # mirrors not supported
-mirrors_js_typed_interop_test: Fail # mirrors not supported
-js_typed_interop_window_property_test/bind*: Fail # js-interop function's not supported
-js_typed_interop_test/method: Fail # js-interop function's not supported
-js_typed_interop_test/closure: Fail # js-interop function's not supported
 js_typed_interop_callable_object_test: Fail # js-interop function's not supported
+js_typed_interop_test/closure: Fail # js-interop function's not supported
+js_typed_interop_test/method: Fail # js-interop function's not supported
+js_typed_interop_window_property_test/bind*: Fail # js-interop function's not supported
+mirrors_js_typed_interop_test: Fail # mirrors not supported
 
 [ $compiler == dart2js && $cps_ir && $browser ]
 js_typed_interop_side_cast_exp_test: RuntimeError # Corner case in package:js that we might want to remove (See comment in #24978).