Remove relocation lock.

src/handles-inl.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 41 matching lines @@
 
 
 template <typename T>
 inline bool Handle<T>::is_identical_to(const Handle<T> other) const {
   ASSERT(location_ == NULL ||
          reinterpret_cast<Address>(*location_) != kZapValue);
 #ifdef DEBUG
   if (FLAG_enable_slow_asserts) {
     Isolate* isolate = Isolate::Current();
     CHECK(isolate->AllowHandleDereference() ||
-          Heap::RelocationLock::IsLocked(isolate->heap()) ||
           !isolate->optimizing_compiler_thread()->IsOptimizerThread());
   }
 #endif  // DEBUG
   return *location_ == *other.location_;
 }
 
 
 template <typename T>
 inline T* Handle<T>::operator*() const {
   ASSERT(location_ != NULL);
@@ skipping 116 matching lines @@
 
 HandleDereferenceGuard::~HandleDereferenceGuard() {
   isolate_->SetAllowHandleDereference(old_state_);
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_HANDLES_INL_H_