Remove for-in selectors from TreeElements.

pkg/compiler/lib/src/resolution/members.dart

Index: pkg/compiler/lib/src/resolution/members.dart
diff --git a/pkg/compiler/lib/src/resolution/members.dart b/pkg/compiler/lib/src/resolution/members.dart
index 91650b135bcf3689311321db8b77aaf1dbe3cf4a..8d80d42b34e63dca609790133fd9ef64d61d1301 100644
--- a/pkg/compiler/lib/src/resolution/members.dart
+++ b/pkg/compiler/lib/src/resolution/members.dart
@@ -4254,10 +4254,8 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
 
   ResolutionResult visitAsyncForIn(AsyncForIn node) {
     registry.registerAsyncForIn(node);
-    registry.setCurrentSelector(node, Selectors.current);
     registry.registerDynamicUse(
         new UniverseSelector(Selectors.current, null));
-    registry.setMoveNextSelector(node, Selectors.moveNext);
     registry.registerDynamicUse(
         new UniverseSelector(Selectors.moveNext, null));
 
@@ -4271,13 +4269,10 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
 
   ResolutionResult visitSyncForIn(SyncForIn node) {
     registry.registerSyncForIn(node);
-    registry.setIteratorSelector(node, Selectors.iterator);
     registry.registerDynamicUse(
         new UniverseSelector(Selectors.iterator, null));
-    registry.setCurrentSelector(node, Selectors.current);
     registry.registerDynamicUse(
         new UniverseSelector(Selectors.current, null));
-    registry.setMoveNextSelector(node, Selectors.moveNext);
     registry.registerDynamicUse(
         new UniverseSelector(Selectors.moveNext, null));