Use List instead of Link in the type system.

sdk/lib/_internal/compiler/implementation/compile_time_constants.dart

Index: sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
diff --git a/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart b/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
index b02a293ca13667ac770170d596209789721bf522..b765de0bf3e37384cde3debd25887088b18c3ba6 100644
--- a/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
+++ b/sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
@@ -331,8 +331,7 @@ class CompileTimeConstantEvaluator extends Visitor {
     if (sourceType.treatAsRaw) {
       keysType = compiler.listClass.rawType;
     } else {
-      Link<DartType> arguments =
-          new Link<DartType>.fromList([sourceType.typeArguments.head]);
+      List<DartType> arguments = <DartType>[sourceType.typeArguments.first];
       keysType = new InterfaceType(compiler.listClass, arguments);
     }
     ListConstant keysList = new ListConstant(keysType, keys);
@@ -342,7 +341,7 @@ class CompileTimeConstantEvaluator extends Visitor {
         : MapConstant.DART_GENERAL_CLASS;
     ClassElement classElement = compiler.jsHelperLibrary.find(className);
     classElement.ensureResolved(compiler);
-    Link<DartType> typeArgument = sourceType.typeArguments;
+    List<DartType> typeArgument = sourceType.typeArguments;
     InterfaceType type;
     if (sourceType.treatAsRaw) {
       type = classElement.rawType;