Fix runtimeType.toString for tear-offs.

pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart

Index: pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart b/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
index 1cea1f35828bdfd5bcdf709d34ca9219ce664739..1c75d1b6c75bbdcf16ea2c44c63983859a896906 100644
--- a/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
@@ -133,8 +133,6 @@ class Emitter implements emitterTask.Emitter {
 
   @override
   js.Template templateForBuiltin(JsBuiltin builtin) {
-    String typeNameProperty = ModelEmitter.typeNameProperty;
-
     switch (builtin) {
       case JsBuiltin.dartObjectConstructor:
         return js.js.expressionTemplateYielding(
@@ -148,7 +146,7 @@ class Emitter implements emitterTask.Emitter {
         return _backend.rti.representationGenerator.templateForIsFunctionType;
 
       case JsBuiltin.rawRtiToJsConstructorName:
-        return js.js.expressionTemplateFor("#.$typeNameProperty");
+        return js.js.expressionTemplateFor("#.name");
 
       case JsBuiltin.rawRuntimeType:
         return js.js.expressionTemplateFor("#.constructor");
@@ -167,19 +165,19 @@ class Emitter implements emitterTask.Emitter {
         String functionClassName =
             _backend.namer.runtimeTypeName(_compiler.functionClass);
         return js.js.expressionTemplateFor(
-            '#.$typeNameProperty === "$functionClassName"');
+            '#.name === "$functionClassName"');
 
       case JsBuiltin.isNullTypeRti:
         String nullClassName =
             _backend.namer.runtimeTypeName(_compiler.nullClass);
         return js.js.expressionTemplateFor(
-            '#.$typeNameProperty === "$nullClassName"');
+            '#.name === "$nullClassName"');
 
       case JsBuiltin.isDartObjectTypeRti:
         String dartObjectClassName =
             _backend.namer.runtimeTypeName(_compiler.objectClass);
         return js.js.expressionTemplateFor(
-            '#.$typeNameProperty === "$dartObjectClassName"');
+            '#.name === "$dartObjectClassName"');
 
       case JsBuiltin.getMetadata:
         return _emitter.templateForReadMetadata;