Set MethodInvocation.interfaceTarget during type inference.

pkg/front_end/testcases/inference/generic_methods_iterable_and_future.dart

Index: pkg/front_end/testcases/inference/generic_methods_iterable_and_future.dart
diff --git a/pkg/front_end/testcases/inference/generic_methods_iterable_and_future.dart b/pkg/front_end/testcases/inference/generic_methods_iterable_and_future.dart
index 0f48f25d5630d792b9c40c54549d6fbadabeed0a..bbfe0453d958383972028d374b02775a8dd5189f 100644
--- a/pkg/front_end/testcases/inference/generic_methods_iterable_and_future.dart
+++ b/pkg/front_end/testcases/inference/generic_methods_iterable_and_future.dart
@@ -12,36 +12,39 @@ Future<int> make(int x) => (new /*@typeArgs=int*/ Future(
 
 main() {
   Iterable<Future<int>> list =
-      <int>[1, 2, 3]. /*@typeArgs=Future<int>*/ map(make);
+      <int>[1, 2, 3]. /*@typeArgs=Future<int>*/ /*@target=List::map*/ map(make);
   Future<List<int>> results =
-      Future. /*@typeArgs=int*/ wait(/*@promotedType=none*/ list);
+      Future. /*@typeArgs=int*/ /*@target=Future::wait*/ wait(
+          /*@promotedType=none*/ list);
   Future<String> results2 = /*@promotedType=none*/ results
-      . /*@typeArgs=String*/ then(
+      . /*@typeArgs=String*/ /*@target=Future::then*/ then(
           /*@returnType=FutureOr<String>*/ (List<int> list) => /*@promotedType=none*/ list
-              . /*@typeArgs=FutureOr<String>*/ fold(
+              . /*@typeArgs=FutureOr<String>*/ /*@target=List::fold*/ fold(
                   '',
                   /*@returnType=FutureOr<String>*/ (/*@type=FutureOr<String>*/ x,
                           /*@type=int*/ y) => /*info:DYNAMIC_CAST,info:DYNAMIC_INVOKE*/ /*@promotedType=none*/ x /*error:UNDEFINED_OPERATOR*/ +
-                      /*@promotedType=none*/ y.toString()));
+                      /*@promotedType=none*/ y
+                          . /*@target=Object::toString*/ toString()));
 
   Future<String> results3 = /*@promotedType=none*/ results
-      . /*@typeArgs=String*/ then(
+      . /*@typeArgs=String*/ /*@target=Future::then*/ then(
           /*@returnType=FutureOr<String>*/ (List<int> list) => /*@promotedType=none*/ list
-              . /*@typeArgs=FutureOr<String>*/ fold(
+              . /*@typeArgs=FutureOr<String>*/ /*@target=List::fold*/ fold(
                   '',
                   /*info:INFERRED_TYPE_CLOSURE,error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ /*@returnType=String*/ (String
                               x,
                           /*@type=int*/ y) =>
-                      /*@promotedType=none*/ x + /*@promotedType=none*/ y
-                          .toString()));
+                      /*@promotedType=none*/ x /*@target=String::+*/ + /*@promotedType=none*/ y
+                          . /*@target=Object::toString*/ toString()));
 
   Future<String> results4 = /*@promotedType=none*/ results
-      . /*@typeArgs=String*/ then(
-          /*@returnType=String*/ (List<int> list) => /*@promotedType=none*/ list
-              .fold<String>(
-                  '',
-                  /*@returnType=String*/ (/*@type=String*/ x,
-                          /*@type=int*/ y) =>
-                      /*@promotedType=none*/ x + /*@promotedType=none*/ y
-                          .toString()));
+      . /*@typeArgs=String*/ /*@target=Future::then*/ then(
+          /*@returnType=String*/ (List<int>
+              list) => /*@promotedType=none*/ list. /*@target=List::fold*/ fold<
+                  String>(
+              '',
+              /*@returnType=String*/ (/*@type=String*/ x,
+                      /*@type=int*/ y) =>
+                  /*@promotedType=none*/ x /*@target=String::+*/ + /*@promotedType=none*/ y
+                      . /*@target=Object::toString*/ toString()));
 }