Create LookupMapAnalysis late.

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

Index: pkg/compiler/lib/src/js_backend/resolution_listener.dart
diff --git a/pkg/compiler/lib/src/js_backend/resolution_listener.dart b/pkg/compiler/lib/src/js_backend/resolution_listener.dart
index 91702a4dfb00b308a7f5b702bcc968f9b3ac95ec..285f88341fc8303f902f75931c96f222950f814d 100644
--- a/pkg/compiler/lib/src/js_backend/resolution_listener.dart
+++ b/pkg/compiler/lib/src/js_backend/resolution_listener.dart
@@ -221,6 +221,9 @@ class ResolutionEnqueuerListener extends EnqueuerListener {
     return true;
   }
 
+  @override
+  void onQueueClosed() {}
+
   /// Adds the impact of [constant] to [impactBuilder].
   void _computeImpactForCompileTimeConstant(
       ConstantValue constant, WorldImpactBuilder impactBuilder) {
@@ -473,6 +476,7 @@ class ResolutionEnqueuerListener extends EnqueuerListener {
         impactBuilder, new BackendImpact(globalUses: staticUses));
   }
 
+  @override
   void logSummary(void log(String message)) {
     _nativeEnqueuer.logSummary(log);
   }