Remove warning for inherited noSuchMethod.

pkg/compiler/lib/src/resolution/class_members.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.
 
 library dart2js.resolution.compute_members;
 
 import '../common.dart';
 import '../common/names.dart' show
-    Identifiers;
+    Identifiers,
+    Names;
 import '../common/resolution.dart' show
     Resolution;
 import '../compiler.dart' show
     Compiler;
 import '../dart_types.dart';
 import '../elements/elements.dart' show
     ClassElement,
     Element,
     LibraryElement,
     Member,
@@ skipping 49 matching lines @@
   }
 
   /// Compute all members of [cls] with the given names.
   void computeMembersByName(String name, Setlet<Name> names) {
     computeMembers(name, names);
   }
 
   /// Compute all members of [cls] and checked that [cls] implements its
   /// interface unless it is abstract or declares a `noSuchMethod` method.
   void computeAllMembers() {
-    Map<Name, Member> declaredMembers = computeMembers(null, null);
-    if (!cls.isAbstract &&
-        !declaredMembers.containsKey(const PublicName('noSuchMethod'))) {
+    computeMembers(null, null);
+    if (!cls.isAbstract) {
+      Member member = classMembers[Names.noSuchMethod_];
+      if (member != null && !member.declarer.isObject) {
+        return;
+      }
       // Check for unimplemented members on concrete classes that neither have
       // a `@proxy` annotation nor declare a `noSuchMethod` method.
       checkInterfaceImplementation();
     }
   }
 
   /// Compute declared and inherited members of [cls] and return a map of the
   /// declared members.
   ///
   /// If [name] and [names] are not null, the computation is restricted to
@@ skipping 856 matching lines @@
         message: "Members have not been fully computed for $this."));
     if (interfaceMembersAreClassMembers) {
       classMembers.forEach((_, member) {
         if (!member.isStatic) f(member);
       });
     } else {
       interfaceMembers.forEach((_, member) => f(member));
     }
   }
 }