Remove for-in selectors from TreeElements.

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

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.resolution.members;
 
 import '../common.dart';
 import '../common/names.dart' show
     Selectors;
 import '../compiler.dart' show
@@ skipping 4236 matching lines @@
     registry.registerTargetOf(node, target);
     return const NoneResult();
   }
 
   registerImplicitInvocation(Selector selector) {
     registry.registerDynamicUse(new UniverseSelector(selector, null));
   }
 
   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));
 
     visit(node.expression);
 
     Scope blockScope = new BlockScope(scope);
     visitForInDeclaredIdentifierIn(node.declaredIdentifier, node, blockScope);
     visitLoopBodyIn(node, node.body, blockScope);
     return const NoneResult();
   }
 
   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));
 
     visit(node.expression);
 
     Scope blockScope = new BlockScope(scope);
     visitForInDeclaredIdentifierIn(node.declaredIdentifier, node, blockScope);
     visitLoopBodyIn(node, node.body, blockScope);
     return const NoneResult();
   }
@@ skipping 468 matching lines @@
     }
     return const NoneResult();
   }
 }
 
 /// Looks up [name] in [scope] and unwraps the result.
 Element lookupInScope(DiagnosticReporter reporter, Node node,
                       Scope scope, String name) {
   return Elements.unwrap(scope.lookup(name), reporter, node);
 }