VM: Evaluate-in-frame should happen in the scope of the method class, not the receiver class.

runtime/vm/debugger_api_impl.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_tools_api.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
@@ skipping 550 matching lines @@
   }
   UNWRAP_AND_CHECK_PARAM(String, expr, expr_in);
   // Type extends Instance, must check first.
   if (target.IsType()) {
     const Class& cls = Class::Handle(Z, Type::Cast(target).type_class());
     return Api::NewHandle(T, cls.Evaluate(expr,
                                           Array::empty_array(),
                                           Array::empty_array()));
   } else if (target.IsInstance()) {
     const Instance& inst = Instance::Cast(target);
-    return Api::NewHandle(T, inst.Evaluate(expr,
+    const Class& receiver_cls = Class::Handle(Z, inst.clazz());
+    return Api::NewHandle(T, inst.Evaluate(receiver_cls,
+                                           expr,
                                            Array::empty_array(),
                                            Array::empty_array()));
   } else if (target.IsLibrary()) {
     const Library& lib = Library::Cast(target);
     return Api::NewHandle(T, lib.Evaluate(expr,
                                           Array::empty_array(),
                                           Array::empty_array()));
   } else if (target.IsClass()) {
     const Class& cls = Class::Cast(target);
     return Api::NewHandle(T, cls.Evaluate(expr,
@@ skipping 381 matching lines @@
 
 #else
 
 DART_EXPORT void Dart_SetPausedEventHandler(Dart_PausedEventHandler handler) {
   // NOOP.
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart