Compute Compiler.proxyConstant on demand.

pkg/compiler/lib/src/common/resolution.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.common.resolution;
 
 import '../compiler.dart' show
     Compiler;
 import '../dart_types.dart' show
     DartType;
@@ skipping 96 matching lines @@
 
   /// Register that a super call will end up calling
   /// [: super.noSuchMethod :].
   void onSuperNoSuchMethod(Registry registry) {}
 
   /// Register that the application creates a constant map.
   void onMapLiteral(Registry registry, DartType type, bool isConstant) {}
 
   /// Called when resolving the `Symbol` constructor.
   void onSymbolConstructor(Registry registry) {}
+
+  /// Called when resolving a prefix or postfix expression.
+  void onIncDecOperation(Registry registry) {}
 }