dart2js: Change name and comment of the flag needsArrayInitializerSupport.

pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
index d441e13e71b7775e2e1153c8b595b507a24fecc7..7f53cbd5ab054cfdb3b6d2cae107412beb767613 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart
@@ -450,7 +450,7 @@ class ContainerBuilder extends CodeEmitterHelper {
       }
       return;
     }
-    emitter.needsArrayInitializerSupport = true;
+    emitter.needsStructuredMemberInfo = true;
 
     // This element is needed for reflection or needs additional stubs or has a
     // super alias. So we need to retain additional information.