Set MethodInvocation.interfaceTarget during type inference.

pkg/front_end/testcases/inference/list_literals_top_level.dart

Index: pkg/front_end/testcases/inference/list_literals_top_level.dart
diff --git a/pkg/front_end/testcases/inference/list_literals_top_level.dart b/pkg/front_end/testcases/inference/list_literals_top_level.dart
index 58c36650730d5c1b19e81b940b3e810408387aec..e89e38c0901ad99bfbdf197542bda5a4d0460aac 100644
--- a/pkg/front_end/testcases/inference/list_literals_top_level.dart
+++ b/pkg/front_end/testcases/inference/list_literals_top_level.dart
@@ -7,16 +7,16 @@ library test;
 
 var /*@topType=List<int>*/ x1 = /*@typeArgs=int*/ [1, 2, 3];
 test1() {
-  x1.add(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 'hi');
-  x1.add(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 4.0);
-  x1.add(4);
+  x1. /*@target=List::add*/ add(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 'hi');
+  x1. /*@target=List::add*/ add(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 4.0);
+  x1. /*@target=List::add*/ add(4);
   List<num> y = x1;
 }
 
 var /*@topType=List<num>*/ x2 = /*@typeArgs=num*/ [1, 2.0, 3];
 test2() {
-  x2.add(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 'hi');
-  x2.add(4.0);
+  x2. /*@target=List::add*/ add(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 'hi');
+  x2. /*@target=List::add*/ add(4.0);
   List<int> y = /*info:ASSIGNMENT_CAST*/ x2;
 }