Mark types of Constructor parameters and preserve referenced typedefs.

pkg/front_end/test/src/incremental/mock_sdk.dart

Index: pkg/front_end/test/src/incremental/mock_sdk.dart
diff --git a/pkg/front_end/test/src/incremental/mock_sdk.dart b/pkg/front_end/test/src/incremental/mock_sdk.dart
index f82d07a622a193e04fe05d7d295d6e4119b8b2a0..fb05af8a8be61ae8c66e1496341bb1c4d988e119 100644
--- a/pkg/front_end/test/src/incremental/mock_sdk.dart
+++ b/pkg/front_end/test/src/incremental/mock_sdk.dart
@@ -197,6 +197,7 @@ abstract class Iterable<E> {
 
 class List<E> implements Iterable<E> {
   List();
+  factory List.from(Iterable elements, {bool growable: true}) => null;
   void add(E value) {}
   void addAll(Iterable<E> iterable) {}
   E operator [](int index) => null;
@@ -226,6 +227,7 @@ external bool identical(Object a, Object b);
 void print(Object o) {}
 
 abstract class _SyncIterable implements Iterable {}
+class _InvocationMirror {}
 ''';
 
 /// Create SDK libraries which are used by Fasta to perform kernel generation.