Annotate targets of implicit this property gets/sets in inference tests.

pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart

Index: pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart
diff --git a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart
index dee3c112f32661426bf8ef58d9ff8d0c722872d2..60ab287de0aea7d6b9571c6bf11cb2aa1a49831f 100644
--- a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart
+++ b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart
@@ -9,15 +9,15 @@ class C<T extends num> {
   T a;
 
   void op(T b) {
-    T r1 = a /*@target=num::+*/ + b;
-    T r2 = a /*@target=num::-*/ - b;
-    T r3 = a /*@target=num::**/ * b;
+    T r1 = /*@target=C::a*/ a /*@target=num::+*/ + b;
+    T r2 = /*@target=C::a*/ a /*@target=num::-*/ - b;
+    T r3 = /*@target=C::a*/ a /*@target=num::**/ * b;
   }
 
   void opEq(T b) {
-    a += b;
-    a -= b;
-    a *= b;
+    /*@target=C::a*/ a += b;
+    /*@target=C::a*/ a -= b;
+    /*@target=C::a*/ a *= b;
   }
 }