Fix annotation of generic method invocations in Fasta inference tests.

pkg/front_end/testcases/inference/future_then_2.dart

Index: pkg/front_end/testcases/inference/future_then_2.dart
diff --git a/pkg/front_end/testcases/inference/future_then_2.dart b/pkg/front_end/testcases/inference/future_then_2.dart
index b47ae6ee74d59f064328ccc2fd6f443dcd8d3ade..6c0c5317a7325eaa7c63ae8e9df7d6b7bacd8722 100644
--- a/pkg/front_end/testcases/inference/future_then_2.dart
+++ b/pkg/front_end/testcases/inference/future_then_2.dart
@@ -16,31 +16,31 @@ class MyFuture<T> implements Future<T> {
 
 void main() {
   MyFuture f;
-  Future<int> t1 = /*@promotedType=none*/ f.then(
+  Future<int> t1 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
       /*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async =>
           await new MyFuture<int>.value(3));
-  Future<int> t2 = /*@promotedType=none*/ f
-      .then(/*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async {
+  Future<int> t2 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
+      /*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async {
     return await new MyFuture<int>.value(3);
   });
-  Future<int> t3 = /*@promotedType=none*/ f
-      .then(/*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async => 3);
-  Future<int> t4 = /*@promotedType=none*/ f
-      .then(/*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async {
+  Future<int> t3 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
+      /*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async => 3);
+  Future<int> t4 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
+      /*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async {
     return 3;
   });
-  Future<int> t5 = /*@promotedType=none*/ f.then(
+  Future<int> t5 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
       /*@returnType=MyFuture<int>*/ (/*@type=dynamic*/ _) =>
           new MyFuture<int>.value(3));
-  Future<int> t6 = /*@promotedType=none*/ f
-      .then(/*@returnType=MyFuture<int>*/ (/*@type=dynamic*/ _) {
+  Future<int> t6 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
+      /*@returnType=MyFuture<int>*/ (/*@type=dynamic*/ _) {
     return new MyFuture<int>.value(3);
   });
-  Future<int> t7 = /*@promotedType=none*/ f.then(
+  Future<int> t7 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
       /*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async =>
           new MyFuture<int>.value(3));
-  Future<int> t8 = /*@promotedType=none*/ f
-      .then(/*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async {
+  Future<int> t8 = /*@promotedType=none*/ f. /*@typeArgs=int*/ then(
+      /*@returnType=Future<int>*/ (/*@type=dynamic*/ _) async {
     return new MyFuture<int>.value(3);
   });
 }