Prepare to have more than one universe.

dart/lib/compiler/implementation/ssa/codegen.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.
 
 class SsaCodeGeneratorTask extends CompilerTask {
   final JavaScriptBackend backend;
   SsaCodeGeneratorTask(JavaScriptBackend backend)
       : this.backend = backend,
         super(backend.compiler);
   String get name() => 'SSA code generator';
@@ skipping 2130 matching lines @@
     } else if (input.propagatedType.canBePrimitive()
                || input.propagatedType.canBeNull()) {
       beginExpression(JSPrecedence.LOGICAL_AND_PRECEDENCE);
       checkObject(input, '===');
       buffer.add(' && ');
       checkType(input, element);
       endExpression(JSPrecedence.LOGICAL_AND_PRECEDENCE);
     } else {
       checkType(input, element);
     }
-    if (compiler.universe.rti.hasTypeArguments(type)) {
+    if (compiler.codegenWorld.rti.hasTypeArguments(type)) {
       InterfaceType interfaceType = type;
       ClassElement cls = type.element;
       Link<Type> arguments = interfaceType.arguments;
       buffer.add(' && ');
       checkObject(node.typeInfoCall, '===');
       cls.typeParameters.forEach((name, _) {
         buffer.add(' && ');
         beginExpression(JSPrecedence.LOGICAL_AND_PRECEDENCE);
         use(node.typeInfoCall, JSPrecedence.EQUALITY_PRECEDENCE);
         buffer.add(".${name.slowToString()} === '${arguments.head}'");
@@ skipping 459 matching lines @@
       startBailoutSwitch();
     }
   }
 
   void endLabeledBlock(HLabeledBlockInformation labeledBlockInfo) {
     if (labeledBlockInfo.body.start.hasGuards()) {
       endBailoutSwitch();
     }
   }
 }