Remove warning for inherited noSuchMethod.

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.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 dart2js.ir_builder_task;
 
 import '../closure.dart' as closure;
 import '../common.dart';
 import '../common/names.dart' show
     Names,
@@ skipping 1213 matching lines @@
     //     break L;  // Break from switch becomes break from loop.
     //   case 1:
     //     BODY2;
     //     state = 0;  // Continue to label ID = 0.
     //     break;
     // }
     assert(irBuilder.isOpen);
     // Preprocess: compute a list of cases that are the target of continue.
     // These are the so-called 'recursive' cases.
     List<JumpTarget> continueTargets = <JumpTarget>[];
-    List<ast.SwitchCase> switchCases = node.cases.nodes.toList();
+    List<ast.Node> switchCases = node.cases.nodes.toList();

[Johnni Winther, 2016/01/26 10:53:49]

Type assertion failure in checked mode.

[karlklose, 2016/01/26 11:43:07]

This was fixed in 091d807d71b792e08818bf6b5bc98f05a88956ab.

     for (ast.SwitchCase switchCase in switchCases) {
       for (ast.Node labelOrCase in switchCase.labelsAndCases) {
         if (labelOrCase is ast.Label) {
           LabelDefinition definition = elements.getLabelDefinition(labelOrCase);
           if (definition != null && definition.isContinueTarget) {
             continueTargets.add(definition.target);
           }
         }
       }
     }
@@ skipping 2578 matching lines @@
   }
 
   Element get closureConverter {
     return _backend.helpers.closureConverter;
   }
 
   void addNativeMethod(FunctionElement function) {
     _backend.emitter.nativeEmitter.nativeMethods.add(function);
   }
 }