Update co19 status files and some small fixes.

sdk/lib/core/iterable.dart

Index: sdk/lib/core/iterable.dart
diff --git a/sdk/lib/core/iterable.dart b/sdk/lib/core/iterable.dart
index d150ab32746d85e97fc1a4e0dbeae938d93e1c5e..083a86db0cfd78a7869f5a9b88f97fcd08fba541 100644
--- a/sdk/lib/core/iterable.dart
+++ b/sdk/lib/core/iterable.dart
@@ -372,7 +372,7 @@ typedef T _Transformation<S, T>(S value);
 
 class MappedIterable<S, T> extends Iterable<T> {
   final Iterable<S> _iterable;
-  final _Transformation _f;
+  final _Transformation<S, T> _f;
 
   MappedIterable(this._iterable, T this._f(S element));
 
@@ -386,7 +386,7 @@ class MappedIterable<S, T> extends Iterable<T> {
 class MappedIterator<S, T> extends Iterator<T> {
   T _current;
   final Iterator<S> _iterator;
-  final _Transformation _f;
+  final _Transformation<S, T> _f;
 
   MappedIterator(this._iterator, T this._f(S element));