Unify error messages for iterables and lists.

runtime/lib/growable_array.dart

Index: runtime/lib/growable_array.dart
diff --git a/runtime/lib/growable_array.dart b/runtime/lib/growable_array.dart
index e9c10822432e6645cd313e0c37c30dc0b6bfb85c..ed5551a9d1296aadd442a3c0281affcb6fe5a433 100644
--- a/runtime/lib/growable_array.dart
+++ b/runtime/lib/growable_array.dart
@@ -198,18 +198,18 @@ class _GrowableList<T> implements List<T> {
 
   T get first {
     if (length > 0) return this[0];
-    throw new StateError("No elements");
+    throw IterableElementError.noElement();
   }
 
   T get last {
     if (length > 0) return this[length - 1];
-    throw new StateError("No elements");
+    throw IterableElementError.noElement();
   }
 
   T get single {
     if (length == 1) return this[0];
-    if (length == 0) throw new StateError("No elements");
-    throw new StateError("More than one element");
+    if (length == 0) throw IterableElementError.noElement();
+    throw IterableElementError.tooMany();;
   }
 
   int indexOf(Object element, [int start = 0]) {