Assert on deleting a held lock.

base/synchronization/lock.h

 // Copyright (c) 2011 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.
 
 #ifndef BASE_SYNCHRONIZATION_LOCK_H_
 #define BASE_SYNCHRONIZATION_LOCK_H_
 
 #include "base/base_export.h"
 #include "base/synchronization/lock_impl.h"
 #include "base/threading/platform_thread.h"
@@ skipping 14 matching lines @@
   // If the lock is not held, take it and return true. If the lock is already
   // held by another thread, immediately return false. This must not be called
   // by a thread already holding the lock (what happens is undefined and an
   // assertion may fail).
   bool Try() { return lock_.Try(); }
 
   // Null implementation if not debug.
   void AssertAcquired() const {}
 #else
   Lock();
-  ~Lock() {}
+  ~Lock();
 
   // NOTE: Although windows critical sections support recursive locks, we do not
   // allow this, and we will commonly fire a DCHECK() if a thread attempts to
   // acquire the lock a second time (while already holding it).
   void Acquire() {
     lock_.Lock();
     CheckUnheldAndMark();
   }
   void Release() {
     CheckHeldAndUnmark();
@@ skipping 79 matching lines @@
   }
 
  private:
   Lock& lock_;
   DISALLOW_COPY_AND_ASSIGN(AutoUnlock);
 };
 
 }  // namespace base
 
 #endif  // BASE_SYNCHRONIZATION_LOCK_H_