Remove backend reference from ResolutionEnqueuerListener.

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

Index: pkg/compiler/lib/src/js_backend/interceptor_data.dart
diff --git a/pkg/compiler/lib/src/js_backend/interceptor_data.dart b/pkg/compiler/lib/src/js_backend/interceptor_data.dart
index e09aaf7864fdc64ceba4ab097e3f20b65bba626f..3d2009f25fcb86fb3b9c1539f1f9998d72b5bbf8 100644
--- a/pkg/compiler/lib/src/js_backend/interceptor_data.dart
+++ b/pkg/compiler/lib/src/js_backend/interceptor_data.dart
@@ -5,6 +5,7 @@
 library js_backend.interceptor_data;
 
 import '../common/names.dart' show Identifiers;
+import '../common/resolution.dart' show Resolution;
 import '../common_elements.dart' show CommonElements;
 import '../elements/elements.dart';
 import '../elements/entities.dart';
@@ -216,6 +217,7 @@ class InterceptorDataBuilderImpl implements InterceptorDataBuilder {
   final NativeData _nativeData;
   final BackendHelpers _helpers;
   final CommonElements _commonElements;
+  final Resolution _resolution;

[Siggi Cherem (dart-lang), 2017/03/14 03:35:17]

any chance that we are guaranteed that cls arguments below are already resolved
and we can drop this dependency too?

[Johnni Winther, 2017/03/15 10:10:20]

Still investigating. It will be gone soon!

 
   /// The members of instantiated interceptor classes: maps a member name to the
   /// list of members that have that name. This map is used by the codegen to
@@ -233,7 +235,7 @@ class InterceptorDataBuilderImpl implements InterceptorDataBuilder {
       new Set<ClassElement>();
 
   InterceptorDataBuilderImpl(
-      this._nativeData, this._helpers, this._commonElements);
+      this._nativeData, this._helpers, this._commonElements, this._resolution);
 
   InterceptorData onResolutionComplete(ClosedWorld closedWorld) {
     return new InterceptorDataImpl(
@@ -246,6 +248,7 @@ class InterceptorDataBuilderImpl implements InterceptorDataBuilder {
   }
 
   void addInterceptorsForNativeClassMembers(ClassElement cls) {
+    cls.ensureResolved(_resolution);
     cls.forEachMember((ClassElement classElement, Element member) {
       if (member.name == Identifiers.call) {
         return;
@@ -269,6 +272,7 @@ class InterceptorDataBuilderImpl implements InterceptorDataBuilder {
 
   void addInterceptors(ClassElement cls) {
     if (_interceptedClasses.add(cls)) {
+      cls.ensureResolved(_resolution);
       cls.forEachMember((ClassElement classElement, Element member) {
         // All methods on [Object] are shadowed by [Interceptor].
         if (classElement == _commonElements.objectClass) return;