Merge CoreTypes and CoreClasses into CommonElements.

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

 // Copyright (c) 2015, 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.
 
 import '../common.dart';
 import '../common/names.dart' show Identifiers, Names, Selectors;
 import '../compiler.dart' show Compiler;
 import '../elements/elements.dart';
 import '../tree/tree.dart';
 import 'backend.dart';
@@ skipping 169 matching lines @@
       throwingImpls.add(element);
       return NsmCategory.THROWING;
     } else {
       otherImpls.add(element);
       return NsmCategory.OTHER;
     }
   }
 
   bool isDefaultNoSuchMethodImplementation(FunctionElement element) {
     ClassElement classElement = element.enclosingClass;
-    return classElement == _compiler.coreClasses.objectClass ||
+    return classElement == _compiler.commonElements.objectClass ||
         classElement == _backend.helpers.jsInterceptorClass ||
         classElement == _backend.helpers.jsNullClass;
   }
 
   bool _hasForwardingSyntax(FunctionElement element) {
     // At this point we know that this is signature-compatible with
     // Object.noSuchMethod, but it may have more than one argument as long as
     // it only has one required argument.
     if (!element.hasResolvedAst) {
       // TODO(johnniwinther): Why do we see unresolved elements here?
@@ skipping 65 matching lines @@
     return false;
   }
 }
 
 enum NsmCategory {
   DEFAULT,
   THROWING,
   NOT_APPLICABLE,
   OTHER,
 }