dart2js: Split TypeTestEmitter into a registry and an emitter.

pkg/compiler/lib/src/js_backend/native_emitter.dart

 // Copyright (c) 2012, 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 js_backend;
 
 class NativeEmitter {
 
   final Map<Element, ClassBuilder> cachedBuilders;
 
@@ skipping 94 matching lines @@
     Set<ClassElement> nonleafClasses = new Set<ClassElement>();
 
     Map<ClassElement, List<ClassElement>> extensionPoints =
         computeExtensionPoints(preOrder);
 
     neededClasses.add(compiler.objectClass);
 
     Set<ClassElement> neededByConstant =
         emitterTask.interceptorsReferencedFromConstants();
     Set<ClassElement> modifiedClasses =
-        emitterTask.typeTestEmitter.classesModifiedByEmitRuntimeTypeSupport();
+        emitterTask.typeTestRegistry.classesModifiedByEmitRuntimeTypeSupport();
 
     for (ClassElement classElement in preOrder.reversed) {
       // Post-order traversal ensures we visit the subclasses before their
       // superclass.  This makes it easy to tell if a class is needed because a
       // subclass is needed.
       ClassBuilder builder = builders[classElement];
       bool needed = false;
       if (builder == null) {
         // Mixin applications (native+mixin) are non-native, so [classElement]
         // has already been emitted as a regular class.  Mark [classElement] as
@@ skipping 180 matching lines @@
 
     emitterTask.oldEmitter.classEmitter.emitClassConstructor(
         classElement, builder);
     bool hasFields = emitterTask.oldEmitter.classEmitter.emitFields(
         classElement, builder, superName, classIsNative: true);
     int propertyCount = builder.properties.length;
     emitterTask.oldEmitter.classEmitter.emitClassGettersSetters(
         classElement, builder);
     emitterTask.oldEmitter.classEmitter.emitInstanceMembers(
         classElement, builder);
-    emitterTask.typeTestEmitter.emitIsTests(classElement, builder);
+    emitterTask.oldEmitter.typeTestEmitter.emitIsTests(classElement, builder);
 
     if (!hasFields &&
         builder.properties.length == propertyCount &&
         superclass is! MixinApplicationElement) {
       builder.isTrivial = true;
     }
 
     return builder;
   }
 
@@ skipping 144 matching lines @@
       if (emitterTask.compiler.enableMinification) targetBuffer.add(';');
       targetBuffer.add(jsAst.prettyPrint(
           new jsAst.ExpressionStatement(init), compiler));
       targetBuffer.add('\n');
     }
 
     targetBuffer.add(nativeBuffer);
     targetBuffer.add('\n');
   }
 }