Remove for-in selectors from TreeElements.

pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart

 // Copyright (c) 2013, 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 simple_types_inferrer;
 
 import '../closure.dart' show
     ClosureClassMap,
     ClosureScope;
 import '../common.dart';
@@ skipping 2265 matching lines @@
                           receiverType, currentType,
                           node.expression);
     return handleLoop(node, () {
       visit(node.body);
     });
   }
 
   T visitAsyncForIn(ast.AsyncForIn node) {
     T expressionType = visit(node.expression);
 
-    Selector currentSelector = elements.getCurrentSelector(node);
+    Selector currentSelector = Selectors.current;
     TypeMask currentMask = elements.getCurrentTypeMask(node);
-    Selector moveNextSelector = elements.getMoveNextSelector(node);
+    Selector moveNextSelector = Selectors.moveNext;
     TypeMask moveNextMask = elements.getMoveNextTypeMask(node);
 
     js.JavaScriptBackend backend = compiler.backend;
     Element ctor = backend.helpers.streamIteratorConstructor;
 
     /// Synthesize a call to the [StreamIterator] constructor.
     T iteratorType = handleStaticSend(node, null, null, ctor,
                                       new ArgumentsTypes<T>([expressionType],
                                                             null));
 
     return handleForInLoop(node, iteratorType, currentSelector, currentMask,
                            moveNextSelector, moveNextMask);
   }
 
   T visitSyncForIn(ast.SyncForIn node) {
     T expressionType = visit(node.expression);
-    Selector iteratorSelector = elements.getIteratorSelector(node);
+    Selector iteratorSelector = Selectors.iterator;
     TypeMask iteratorMask = elements.getIteratorTypeMask(node);
-    Selector currentSelector = elements.getCurrentSelector(node);
+    Selector currentSelector = Selectors.current;
     TypeMask currentMask = elements.getCurrentTypeMask(node);
-    Selector moveNextSelector = elements.getMoveNextSelector(node);
+    Selector moveNextSelector = Selectors.moveNext;
     TypeMask moveNextMask = elements.getMoveNextTypeMask(node);
 
     T iteratorType = handleDynamicSend(
         node, iteratorSelector, iteratorMask, expressionType,
         new ArgumentsTypes<T>.empty());
 
     return handleForInLoop(node, iteratorType, currentSelector, currentMask,
                            moveNextSelector, moveNextMask);
   }
 }