Handle int constant

pkg/compiler/lib/src/js_backend/element_strategy.dart

Index: pkg/compiler/lib/src/js_backend/element_strategy.dart
diff --git a/pkg/compiler/lib/src/js_backend/element_strategy.dart b/pkg/compiler/lib/src/js_backend/element_strategy.dart
index d3e5e9e5139e3fcb1f7aa5f9168f6796bb561f33..9543a11116509f1e384ac801a420dbda61b21287 100644
--- a/pkg/compiler/lib/src/js_backend/element_strategy.dart
+++ b/pkg/compiler/lib/src/js_backend/element_strategy.dart
@@ -50,12 +50,8 @@ class ElementBackendStrategy implements BackendStrategy {
       NativeBasicData nativeBasicData,
       ClosedWorld closedWorld,
       SelectorConstraintsStrategy selectorConstraintsStrategy) {
-    return new ElementCodegenWorldBuilderImpl(
-        _compiler.elementEnvironment,
-        nativeBasicData,
-        closedWorld,
-        _compiler.backend.constants,
-        selectorConstraintsStrategy);
+    return new ElementCodegenWorldBuilderImpl(_compiler.elementEnvironment,
+        nativeBasicData, closedWorld, selectorConstraintsStrategy);
   }
 
   @override