Associate the correct type to method receivers (instead of Dynamic type).

runtime/vm/runtime_entry_test.cc

 // Copyright (c) 2011, 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 "vm/runtime_entry.h"
 
 #include "vm/object.h"
 #include "vm/symbols.h"
 #include "vm/verifier.h"
 
 namespace dart {
 
 // Add function to a class and that class to the class dictionary so that
 // frame walking can be used.
 const Function& RegisterFakeFunction(const char* name, const Code& code) {
+  const String& class_name = String::Handle(Symbols::New("ownerClass"));
+  const Script& script = Script::Handle();
+  const Class& owner_class =
+      Class::Handle(Class::New(class_name, script, Scanner::kDummyTokenIndex));
   const String& function_name = String::ZoneHandle(Symbols::New(name));
   const Function& function = Function::ZoneHandle(
       Function::New(function_name, RawFunction::kRegularFunction,
-                    true, false, false, false, 0));
-  Class& cls = Class::ZoneHandle();
-  const Script& script = Script::Handle();
-  cls = Class::New(function_name, script, Scanner::kDummyTokenIndex);
+                    true, false, false, false, owner_class, 0));
   const Array& functions = Array::Handle(Array::New(1));
   functions.SetAt(0, function);
-  cls.SetFunctions(functions);
+  owner_class.SetFunctions(functions);
   Library& lib = Library::Handle(Library::CoreLibrary());
-  lib.AddClass(cls);
+  lib.AddClass(owner_class);
   function.SetCode(code);
   return function;
 }
 
 
 // A runtime call for test purposes.
 // Arg0: a smi.
 // Arg1: a smi.
 // Result: a smi representing arg0 - arg1.
 DEFINE_RUNTIME_ENTRY(TestSmiSub, 2) {
@@ skipping 14 matching lines @@
                           RawObject* arg0, RawObject* arg1) {
   // Ignoring overflow in the calculation below and using the internal
   // representation of Smi directly without using any handlized code.
   intptr_t result = reinterpret_cast<intptr_t>(arg0) +
       reinterpret_cast<intptr_t>(arg1);
   return reinterpret_cast<RawObject*>(result);
 }
 END_LEAF_RUNTIME_ENTRY
 
 }  // namespace dart