Don't overload FreeListElement for become.

runtime/vm/dart.cc

 // Copyright (c) 2013, 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/dart.h"
 
+#include "vm/become.h"
 #include "vm/code_observers.h"
 #include "vm/cpu.h"
 #include "vm/dart_api_state.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/handles.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
@@ skipping 122 matching lines @@
   VirtualMemory::InitOnce();
   OSThread::InitOnce();
   if (FLAG_support_timeline) {
     Timeline::InitOnce();
   }
   NOT_IN_PRODUCT(TimelineDurationScope tds(Timeline::GetVMStream(),
                                            "Dart::InitOnce"));
   Isolate::InitOnce();
   PortMap::InitOnce();
   FreeListElement::InitOnce();
+  ForwardingCorpse::InitOnce();
   Api::InitOnce();
   NOT_IN_PRODUCT(CodeObservers::InitOnce());
   if (FLAG_profiler) {
     ThreadInterrupter::InitOnce();
     Profiler::InitOnce();
   }
   SemiSpace::InitOnce();
   Metric::InitOnce();
   StoreBuffer::InitOnce();
   MarkingStack::InitOnce();
@@ skipping 545 matching lines @@
   return predefined_handles_->handles_.IsValidScopedHandle(address);
 }
 
 
 bool Dart::IsReadOnlyApiHandle(Dart_Handle handle) {
   ASSERT(predefined_handles_ != NULL);
   return predefined_handles_->api_handles_.IsValidHandle(handle);
 }
 
 }  // namespace dart