Handle for-in loops

test/dart_codegen/expect/collection/queue.dart

 part of dart.collection;
  abstract class Queue<E> implements Iterable<E>, EfficientLength {factory Queue() = ListQueue<E>;
  factory Queue.from(Iterable elements) = ListQueue<E>.from;
  E removeFirst();
  E removeLast();
  void addFirst(E value);
  void addLast(E value);
  void add(E value);
  bool remove(Object object);
  void addAll(Iterable<E> iterable);
@@ skipping 59 matching lines @@
  int _elementCount = 0;
  DoubleLinkedQueue() {
 _sentinel = new _DoubleLinkedQueueEntrySentinel<E>();
 }
  factory DoubleLinkedQueue.from(Iterable elements) {
 Queue<E> list = ((__x17) => DEVC$RT.cast(__x17, DEVC$RT.type((DoubleLinkedQueue<dynamic> _) {
 }
 ), DEVC$RT.type((Queue<E> _) {
 }
 ), "InferableAllocation", """line 207, column 21 of dart:collection/queue.dart: """, __x17 is Queue<E>, false))(new DoubleLinkedQueue());
- for (final E e in elements) {
+ for (final E e in DEVC$RT.cast(elements, DEVC$RT.type((Iterable<dynamic> _) {
+}
+), DEVC$RT.type((Iterable<E> _) {
+}
+), "CompositeCast", """line 208, column 23 of dart:collection/queue.dart: """, elements is Iterable<E>, false)) {
 list.addLast(e);
 }
  return DEVC$RT.cast(list, DEVC$RT.type((Queue<E> _) {
 }
 ), DEVC$RT.type((DoubleLinkedQueue<E> _) {
 }
 ), "CompositeCast", """line 211, column 12 of dart:collection/queue.dart: """, list is DoubleLinkedQueue<E>, false);
 }
  int get length => _elementCount;
  void addLast(E value) {
@@ skipping 138 matching lines @@
 ), "CompositeCast", """line 402, column 40 of dart:collection/queue.dart: """, sourceList is Iterable<E>, false), 0);
  queue._tail = length;
  return queue;
 }
  else {
 int capacity = _INITIAL_CAPACITY;
  if (elements is EfficientLength) {
 capacity = elements.length;
 }
  ListQueue<E> result = new ListQueue<E>(capacity);
- for (final E element in elements) {
+ for (final E element in DEVC$RT.cast(elements, DEVC$RT.type((Iterable<dynamic> _) {
+}
+), DEVC$RT.type((Iterable<E> _) {
+}
+), "CompositeCast", """line 411, column 31 of dart:collection/queue.dart: """, elements is Iterable<E>, false)) {
 result.addLast(element);
 }
  return result;
 }
 }
  Iterator<E> get iterator => new _ListQueueIterator<E>(this);
  void forEach(void action(E element)) {
 int modificationCount = _modificationCount;
  for (int i = _head; i != _tail; i = (i + 1) & (_table.length - 1)) {
 action(_table[i]);
@@ skipping 242 matching lines @@
 _queue._checkModification(_modificationCount);
  if (_position == _end) {
 _current = null;
  return false;
 }
  _current = ((__x19) => DEVC$RT.cast(__x19, dynamic, E, "CompositeCast", """line 738, column 16 of dart:collection/queue.dart: """, __x19 is E, false))(_queue._table[_position]);
  _position = (_position + 1) & (_queue._table.length - 1);
  return true;
 }
 }