This CL is due the thread I have made on chromium-dev:...

base/ref_counted.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/ref_counted.h"
 
 #include "base/logging.h"
+#include "base/thread_collision_warner.h"
 
 namespace base {
 
 namespace subtle {
 
 RefCountedBase::RefCountedBase() : ref_count_(0) {
 #ifndef NDEBUG
   in_dtor_ = false;
 #endif
 }
 
 RefCountedBase::~RefCountedBase() {
 #ifndef NDEBUG
   DCHECK(in_dtor_) << "RefCounted object deleted without calling Release()";
 #endif
 }
 
 void RefCountedBase::AddRef() {
+  // Current thread books the critical section "AddRelease" without release it
+  D_BOOK_CRITICAL_SECTION(add_release_); 
 #ifndef NDEBUG
   DCHECK(!in_dtor_);
 #endif
   ++ref_count_;
 }
 
 bool RefCountedBase::Release() {
+  // Current thread books the critical section "AddRelease" without release it
+  D_BOOK_CRITICAL_SECTION(add_release_); 
 #ifndef NDEBUG
   DCHECK(!in_dtor_);
 #endif
   if (--ref_count_ == 0) {
 #ifndef NDEBUG
     in_dtor_ = true;
 #endif
     return true;
   }
   return false;
@@ skipping 30 matching lines @@
 #endif
     return true;
   }
   return false;
 }
 
 }  // namespace subtle
 
 }  // namespace base