Fix status+warning.

sdk/lib/_internal/compiler/implementation/elements/modelx.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 elements.modelx;
 
 import 'elements.dart';
 import '../../compiler.dart' as api;
 import '../tree/tree.dart';
 import '../util/util.dart';
@@ skipping 325 matching lines @@
 
   // TODO(kasperl): These seem unnecessary.
   set patch(value) => unsupported();
   set origin(value) => unsupported();
   set defaultImplementation(value) => unsupported();
 
   get redirectionTarget => this;
 
   getLibrary() => enclosingElement.getLibrary();
 
-  computeTargetType(Compiler compiler, InterfaceType newType) => unsupported();
+  computeTargetType(InterfaceType newType) => unsupported();
 
   String get message => '${messageKind.message(messageArguments)}';
 
   String toString() => '<$name: $message>';
 }
 
 /// A message attached to a [WarnOnUseElementX].
 class WrappedMessage {
   /// The message position. If [:null:] the position of the reference to the
   /// [WarnOnUseElementX] is used.
@@ skipping 2013 matching lines @@
 
   MetadataAnnotation ensureResolved(Compiler compiler) {
     if (resolutionState == STATE_NOT_STARTED) {
       compiler.resolver.resolveMetadataAnnotation(this);
     }
     return this;
   }
 
   String toString() => 'MetadataAnnotation($value, $resolutionState)';
 }