Fix summarize const expression logic to be compatible with Dart2JS.

pkg/analyzer/lib/src/summary/summarize_const_expr.dart

 // Copyright (c) 2016, 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 serialization.summarize_const_expr;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/type.dart' show DartType;
 import 'package:analyzer/src/summary/format.dart';
@@ skipping 257 matching lines @@
       operations.add(UnlinkedExprOperation.pushParameter);
       strings.add(expr.identifier.name);
       operations.add(UnlinkedExprOperation.assignToProperty);
     } else {
       throw new StateError('Unsupported assignable: $expr');
     }
   }
 
   void _pushInt(int value) {
     assert(value >= 0);
-    if (value >= (1 << 32)) {
+    if (value >= 0x100000000) {
       int numOfComponents = 0;
       ints.add(numOfComponents);
       void pushComponents(int value) {
-        if (value >= (1 << 32)) {
-          pushComponents(value >> 32);
+        if (value >= 0x100000000) {
+          pushComponents(value ~/ 0x100000000);
         }
         numOfComponents++;
         ints.add(value & 0xFFFFFFFF);
       }
 
       pushComponents(value);
       ints[ints.length - 1 - numOfComponents] = numOfComponents;
       operations.add(UnlinkedExprOperation.pushLongInt);
     } else {
       operations.add(UnlinkedExprOperation.pushInt);
@@ skipping 376 matching lines @@
     if (typeArguments == null) {
       ints.add(0);
     } else {
       ints.add(typeArguments.arguments.length);
       for (TypeAnnotation type in typeArguments.arguments) {
         references.add(serializeTypeName(type));
       }
     }
   }
 }