Update mirror tests for removed API.

tests/lib/mirrors/operator_test.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.
 
 /// Test operators.
 library test.operator_test;
 
 import 'dart:mirrors';
 
 import 'package:expect/expect.dart';
@@ skipping 24 matching lines @@
 
   // TODO(ahe): use void when dart2js reifies that type.
   operator []=(int a, Foo b) {}
 }
 
 void main() {
   ClassMirror cls = reflectClass(Foo);
   var operators = new Map<Symbol, MethodMirror>();
   var operatorParameters = new Map<Symbol, List>();
   var returnTypes =  new Map<Symbol, Mirror>();
-  for (MethodMirror method in cls.methods.values) {
+  for (MethodMirror method in cls.declarations.values.where(
+      (d) => d is MethodMirror && !d.isConstructor)) {
     Expect.isTrue(method.isRegularMethod);
     Expect.isTrue(method.isOperator);
     Expect.isFalse(method.isGetter);
     Expect.isFalse(method.isSetter);
     Expect.isFalse(method.isAbstract);
     operators[method.simpleName] = method;
     operatorParameters[method.simpleName] = method.parameters;
     returnTypes[method.simpleName] = method.returnType;
   }
   expect(OPERATORS, operators);
@@ skipping 71 matching lines @@
 '>=: $FOO, '
 '>>: $FOO, '
 '[]: $FOO, '
 '[]=: $DYNAMIC, '
 '^: $FOO, '
 'unary-: $FOO, '
 '|: $FOO, '
 '~: $FOO, '
 '~/: $FOO'
 '}';