Avoid truncating shift in lib_2/math/low_test

Change-Id: I7902c0839663775abb94c3e2dcfee14ac8e4beb3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/108281
Reviewed-by: Lasse R.H. Nielsen <[email protected]>
Commit-Queue: Stephen Adams <[email protected]>

Author: rakudrama

tests/lib_2/lib_2_dartdevc.status

@@ -82,7 +82,6 @@ isolate/*: SkipByDesign # No support for dart:isolate in dart4web (http://dartbu
 js/null_test: RuntimeError # Issue 30652
 math/double_pow_test: RuntimeError # Issue 29922
 math/double_pow_test: CompileTimeError, OK # Error if web int literal cannot be represented exactly, see http://dartbug.com/33351
-math/low_test: RuntimeError # Issue 29922
 math/random_big_test: RuntimeError # Issue 29922
 mirrors/*: SkipByDesign # Mirrors not supported on web in Dart 2.0.
 mirrors/private_types_test: RuntimeError # Issue 29922

tests/lib_2/math/low_test.dart

@@ -9,7 +9,7 @@ import "package:expect/expect.dart";
 import 'dart:math';
 
 void main() {
-  var n = (2 * (1 << 32)) ~/ 3;
+  var n = (2 * 0x100000000) ~/ 3;
   var n2 = n ~/ 2;
 
   var iterations = 200000;