Move relational operators to the new interceptors.

tests/compiler/dart2js/mock_compiler.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 mock_compiler;
 
 import 'dart:uri';
 
 import '../../../sdk/lib/_internal/compiler/compiler.dart' as api;
 import '../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart';
@@ skipping 59 matching lines @@
     operator +(other) {}
     operator -(other) {}
     operator ~/(other) {}
     operator /(other) {}
     operator *(other) {}
     operator <<(other) {}
     operator >>(other) {}
     operator |(other) {}
     operator &(other) {}
     operator ^(other) {}
+    operator >(other) {}
+    operator >=(other) {}
+    operator <(other) {}
+    operator <=(other) {}
+    operator ==(other) {}
   }
   class JSInt {
   }
   class JSDouble {
   }
   class JSNull {
   }
   class JSBool {
   }
   class JSFunction {
   }
   class ObjectInterceptor {
   }
   getInterceptor(x) {}''';
 
 const String DEFAULT_CORELIB = r'''
   print(var obj) {}
   abstract class num {}
   abstract class int extends num { }
   abstract class double extends num { }
   class bool {}
   class String {}
-  class Object {}
+  class Object {
+    operator ==(other) {}
+  }
   class Type {}
   class Function {}
   class List<E> {}
   abstract class Map<K,V> {}
   class Closure {}
   class Null {}
   class Dynamic_ {}
   bool identical(Object a, Object b) {}''';
 
 const String DEFAULT_ISOLATE_HELPERLIB = r'''
@@ skipping 208 matching lines @@
   operator []=(Node node, Element element) {
     map[node] = element;
   }
 
   operator [](Node node) => map[node];
 
   void remove(Node node) {
     map.remove(node);
   }
 }