Update dart2js diagnostics to prepare for filtering.

sdk/lib/_internal/compiler/implementation/compile_time_constants.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.
 
 part of dart2js;
 
 /**
  * The [ConstantHandler] keeps track of compile-time constants,
  * initializations of global and static fields, and default values of
  * optional parameters.
@@ skipping 287 matching lines @@
     List<Constant> keys = <Constant>[];
     Map<Constant, Constant> map = new Map<Constant, Constant>();
     for (Link<Node> link = node.entries.nodes;
          !link.isEmpty;
          link = link.tail) {
       LiteralMapEntry entry = link.head;
       Constant key = evaluateConstant(entry.key);
       if (!map.containsKey(key)) {
         keys.add(key);
       } else {
-        compiler.reportWarningCode(entry.key, MessageKind.EQUAL_MAP_ENTRY_KEY);
+        compiler.reportWarning(entry.key, MessageKind.EQUAL_MAP_ENTRY_KEY);
       }
       map[key] = evaluateConstant(entry.value);
     }
 
     bool onlyStringKeys = true;
     Constant protoValue = null;
     for (var key in keys) {
       if (key.isString()) {
         if (key.value == MapConstant.PROTO_PROPERTY) {
           protoValue = map[key];
@@ skipping 634 matching lines @@
           if (fieldValue == null) {
             // Use the default value.
             fieldValue = handler.compileConstant(field);
           }
           jsNewArguments.add(fieldValue);
         },
         includeSuperAndInjectedMembers: true);
     return jsNewArguments;
   }
 }