Fix summarize const expression logic to be compatible with Dart2JS.

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

Index: pkg/analyzer/lib/src/summary/summarize_const_expr.dart
diff --git a/pkg/analyzer/lib/src/summary/summarize_const_expr.dart b/pkg/analyzer/lib/src/summary/summarize_const_expr.dart
index 46b69582fc0f4300576ac0a8a6e059fbe1c1c93d..fc3184bf0cc53e0dbab1eb7e7048cdd932793503 100644
--- a/pkg/analyzer/lib/src/summary/summarize_const_expr.dart
+++ b/pkg/analyzer/lib/src/summary/summarize_const_expr.dart
@@ -275,12 +275,12 @@ abstract class AbstractConstExprSerializer {
 
   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);