dart2js: Use is-checks from the model in the old emitter.

pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart2js.js_emitter;
 
 class ClassEmitter extends CodeEmitterHelper {
 
   ClassStubGenerator get _stubGenerator =>
       new ClassStubGenerator(compiler, namer, backend);
@@ skipping 28 matching lines @@
     }
 
     ClassBuilder builder = new ClassBuilder(classElement, namer);
     builder.superName = superName;
     emitConstructorsForCSP(classElement, onlyForRti: onlyForRti);
     emitFields(classElement, builder, onlyForRti: onlyForRti);
     emitCheckedClassSetters(classElement, builder, onlyForRti: onlyForRti);
     emitClassGettersSettersForCSP(classElement, builder,
                                   onlyForRti: onlyForRti);
     emitInstanceMembers(classElement, builder, onlyForRti: onlyForRti);
-    emitter.typeTestEmitter.emitIsTests(classElement, builder);
+    emitRuntimeTypeInformation(cls, builder);
     if (additionalProperties != null) {
       additionalProperties.forEach(builder.addProperty);
     }
 
     if (classElement == backend.closureClass) {
       // We add a special getter here to allow for tearing off a closure from
       // itself.
       String name = namer.getMappedInstanceName(Compiler.CALL_OPERATOR_NAME);
       jsAst.Fun function = js('function() { return this; }');
       builder.addProperty(namer.getterNameFromAccessorName(name), function);
@@ skipping 239 matching lines @@
       // Emit the noSuchMethod handlers on the Object prototype now,
       // so that the code in the dynamicFunction helper can find
       // them. Note that this helper is invoked before analyzing the
       // full JS script.
       if (!emitter.nativeEmitter.handleNoSuchMethod) {
         emitter.nsmEmitter.emitNoSuchMethodHandlers(builder.addProperty);
       }
     }
   }
 
+  /// Emits the members from the model.
+  void emitRuntimeTypeInformation(Class cls, ClassBuilder builder) {
+    assert(builder.functionType == null);
+    if (cls.functionTypeIndex != null) {
+      builder.functionType = '${cls.functionTypeIndex}';
+    }
+
+    for (Method method in cls.isChecks) {
+      builder.addProperty(method.name, method.code);
+    }
+  }
+
   void emitClassBuilderWithReflectionData(String className,
                                           ClassElement classElement,
                                           ClassBuilder classBuilder,
                                           ClassBuilder enclosingBuilder) {
     var metadata = emitter.metadataEmitter.buildMetadataFunction(classElement);
     if (metadata != null) {
       classBuilder.addProperty("@", metadata);
     }
 
     if (backend.isAccessibleByReflection(classElement)) {
@@ skipping 300 matching lines @@
               js.number(index));
     }
     jsAst.Expression convertRtiToRuntimeType = emitter
         .staticFunctionAccess(backend.findHelper('convertRtiToRuntimeType'));
     compiler.dumpInfoTask.registerElementAst(element,
         builder.addProperty(name,
             js('function () { return #(#) }',
                 [convertRtiToRuntimeType, computeTypeVariable])));
   }
 }