dart2js: Move type_test_emitter.

pkg/compiler/lib/src/js_emitter/type_test_generator.dart

Index: pkg/compiler/lib/src/js_emitter/type_test_generator.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/type_test_emitter.dart b/pkg/compiler/lib/src/js_emitter/type_test_generator.dart
similarity index 91%
copy from pkg/compiler/lib/src/js_emitter/old_emitter/type_test_emitter.dart
copy to pkg/compiler/lib/src/js_emitter/type_test_generator.dart
index 2607581268d4937a88856faab15e5e47c7f0a7b7..f515ea3ea4fca75edf3fd88b01d1a733ff755abf 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/type_test_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/type_test_generator.dart
@@ -1,18 +1,28 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, 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 TypeTestEmitter extends CodeEmitterHelper {
+class TypeTestGenerator {
+  final Compiler compiler;
+  final CodeEmitterTask emitterTask;
+  final Namer namer;
+
+  TypeTestGenerator(this.compiler, this.emitterTask, this.namer);
+
+  JavaScriptBackend get backend => compiler.backend;
+  OldEmitter get oldEmitter => emitterTask.oldEmitter;
+  TypeTestRegistry get typeTestRegistry => emitterTask.typeTestRegistry;
+
   Set<ClassElement> get checkedClasses =>
-      emitter.typeTestRegistry.checkedClasses;
+      typeTestRegistry.checkedClasses;
 
   Iterable<ClassElement> get classesUsingTypeVariableTests =>
-      emitter.typeTestRegistry.classesUsingTypeVariableTests;
+      typeTestRegistry.classesUsingTypeVariableTests;
 
   Set<FunctionType> get checkedFunctionTypes =>
-      emitter.typeTestRegistry.checkedFunctionTypes;
+      typeTestRegistry.checkedFunctionTypes;
 
   void emitIsTests(ClassElement classElement, ClassBuilder builder) {
     assert(invariant(classElement, classElement.isDeclaration));
@@ -44,7 +54,7 @@ class TypeTestEmitter extends CodeEmitterHelper {
       jsAst.Expression encoding = rti.getSignatureEncoding(type, thisAccess);
       String operatorSignature = namer.operatorSignature;
       if (!type.containsTypeVariables) {
-        builder.functionType = '${emitter.metadataEmitter.reifyType(type)}';
+        builder.functionType = '${oldEmitter.metadataEmitter.reifyType(type)}';
       } else {
         builder.addProperty(operatorSignature, encoding);
       }
@@ -54,7 +64,8 @@ class TypeTestEmitter extends CodeEmitterHelper {
       if (cls.typeVariables.isEmpty) return;
       RuntimeTypes rti = backend.rti;
       jsAst.Expression expression;
-      bool needsNativeCheck = emitter.nativeEmitter.requiresNativeIsCheck(cls);
+      bool needsNativeCheck =
+          oldEmitter.nativeEmitter.requiresNativeIsCheck(cls);
       expression = rti.getSupertypeSubstitution(classElement, cls);
       if (expression == null && (emitNull || needsNativeCheck)) {
         expression = new jsAst.LiteralNull();