Merge CoreTypes and CoreClasses into CommonElements.

pkg/compiler/lib/src/inferrer/inferrer_visitor.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.
 
 library inferrer_visitor;
 
 import 'dart:collection' show IterableMixin;
 
 import '../common.dart';
 import '../options.dart' show CompilerOptions;
@@ skipping 873 matching lines @@
   }
 
   T visitLiteralNull(LiteralNull node) {
     return types.nullType;
   }
 
   T visitLiteralSymbol(LiteralSymbol node) {
     // TODO(kasperl): We should be able to tell that the type of a literal
     // symbol is always a non-null exact symbol implementation -- not just
     // any non-null subtype of the symbol interface.
-    return types.nonNullSubtype(closedWorld.coreClasses.symbolClass);
+    return types.nonNullSubtype(closedWorld.commonElements.symbolClass);
   }
 
   @override
   void previsitDeferredAccess(Send node, PrefixElement prefix, _) {
     // Deferred access does not affect inference.
   }
 
   T handleTypeLiteralGet() {
     return types.typeType;
   }
@@ skipping 130 matching lines @@
             (operator == '!=' && !usePositive)) {
           // Type the elements as null.
           if (Elements.isLocal(receiverElement)) {
             locals.update(receiverElement, types.nullType, node);
           }
           if (Elements.isLocal(argumentElement)) {
             locals.update(argumentElement, types.nullType, node);
           }
         } else {
           // Narrow the elements to a non-null type.
-          DartType objectType = closedWorld.coreTypes.objectType;
+          DartType objectType = closedWorld.commonElements.objectType;
           if (Elements.isLocal(receiverElement)) {
             narrow(receiverElement, objectType, node);
           }
           if (Elements.isLocal(argumentElement)) {
             narrow(argumentElement, objectType, node);
           }
         }
       }
     }
   }
@@ skipping 439 matching lines @@
     return type;
   }
 
   T visitCascade(Cascade node) {
     // Ignore the result of the cascade send and return the type of the cascade
     // receiver.
     visit(node.expression);
     return cascadeReceiverStack.removeLast();
   }
 }