Handle const constructor invocation in kernel_impact.

pkg/compiler/lib/src/serialization/impact_serialization.dart

Index: pkg/compiler/lib/src/serialization/impact_serialization.dart
diff --git a/pkg/compiler/lib/src/serialization/impact_serialization.dart b/pkg/compiler/lib/src/serialization/impact_serialization.dart
index e8ee514b68673c45724de56ff5d5dd54f8447f0e..c6ce2581275ce6bca17d520c04cf3194636f33c7 100644
--- a/pkg/compiler/lib/src/serialization/impact_serialization.dart
+++ b/pkg/compiler/lib/src/serialization/impact_serialization.dart
@@ -78,6 +78,9 @@ class ImpactSerializer implements WorldImpactVisitor {
     object.setEnum(Key.KIND, staticUse.kind);
     serializeElementReference(
         element, Key.ELEMENT, Key.NAME, object, staticUse.element);
+    if (staticUse.type != null) {
+      object.setType(Key.TYPE, staticUse.type);
+    }
   }
 
   @override
@@ -131,7 +134,8 @@ class ImpactDeserializer {
       StaticUseKind kind = object.getEnum(Key.KIND, StaticUseKind.values);
       Element usedElement =
           deserializeElementReference(element, Key.ELEMENT, Key.NAME, object);
-      staticUses.add(new StaticUse.internal(usedElement, kind));
+      DartType type = object.getType(Key.TYPE, isOptional: true);
+      staticUses.add(new StaticUse.internal(usedElement, kind, type));
     }
 
     ListDecoder dynamicUseDecoder = objectDecoder.getList(Key.DYNAMIC_USES);