Fix mixin of patched classes

runtime/vm/object.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 "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 5567 matching lines @@
     result.set_data(data);
   }
   return result.raw();
 }
 
 
 RawFunction* Function::Clone(const Class& new_owner) const {
   ASSERT(!IsConstructor());
   Function& clone = Function::Handle();
   clone ^= Object::Clone(*this, Heap::kOld);
-  const Class& owner = Class::Handle(this->Owner());
+  const Class& origin = Class::Handle(this->origin());
   const PatchClass& clone_owner =
-      PatchClass::Handle(PatchClass::New(new_owner, owner));
+      PatchClass::Handle(PatchClass::New(new_owner, origin));
   clone.set_owner(clone_owner);
   clone.StorePointer(&clone.raw_ptr()->code_, Code::null());
   clone.StorePointer(&clone.raw_ptr()->unoptimized_code_, Code::null());
   clone.set_usage_counter(0);
   clone.set_deoptimization_counter(0);
   clone.set_optimized_instruction_count(0);
   clone.set_optimized_call_site_count(0);
   return clone.raw();
 }
 
@@ skipping 11855 matching lines @@
   return "_MirrorReference";
 }
 
 
 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const {
   Instance::PrintToJSONStream(stream, ref);
 }
 
 
 }  // namespace dart