Use List instead of Link in the type system.

sdk/lib/_internal/compiler/implementation/util/link.dart

Index: sdk/lib/_internal/compiler/implementation/util/link.dart
diff --git a/sdk/lib/_internal/compiler/implementation/util/link.dart b/sdk/lib/_internal/compiler/implementation/util/link.dart
index 0dda13ada540fcc537255899bc0b7e48a141f90d..e93deeb208075a0f1bd003dec13d0b519d8dfdd2 100644
--- a/sdk/lib/_internal/compiler/implementation/util/link.dart
+++ b/sdk/lib/_internal/compiler/implementation/util/link.dart
@@ -8,25 +8,6 @@ class Link<T> {
   T get head => null;
   Link<T> get tail => null;
 
-  factory Link.fromList(List<T> list) {
-    switch (list.length) {
-      case 0:
-        return new Link<T>();
-      case 1:
-        return new LinkEntry<T>(list[0]);
-      case 2:
-        return new LinkEntry<T>(list[0], new LinkEntry<T>(list[1]));
-      case 3:
-        return new LinkEntry<T>(
-            list[0], new LinkEntry<T>(list[1], new LinkEntry<T>(list[2])));
-    }
-    Link link = new Link<T>();
-    for (int i = list.length ; i > 0; i--) {
-      link = link.prepend(list[i - 1]);
-    }
-    return link;
-  }
-
   const Link();
 
   Link<T> prepend(T element) {