Reduce header dependencies in base/

base/condition_variable_unittest.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.
 
 // Multi-threaded tests of ConditionVariable class.
 
 #include <time.h>
 #include <algorithm>
 #include <vector>
 
 #include "base/condition_variable.h"
+#include "base/lock.h"
 #include "base/logging.h"
 #include "base/platform_thread.h"
 #include "base/scoped_ptr.h"
 #include "base/spin_wait.h"
 #include "base/thread_collision_warner.h"
 #include "base/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 using base::TimeDelta;
@@ skipping 707 matching lines @@
 
     {
       AutoLock auto_lock(lock_);
       // Send notification that we completed our "work."
       WorkIsCompleted(thread_id);
     }
   }
 }
 
 }  // namespace