Update from https://crrev.com/311076

cc/base/completion_event.h

 // Copyright 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 CC_BASE_COMPLETION_EVENT_H_
 #define CC_BASE_COMPLETION_EVENT_H_
 
 #include "base/logging.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread_restrictions.h"
 
 namespace cc {
 
 // Used for making blocking calls from one thread to another. Use only when
 // absolutely certain that doing-so will not lead to a deadlock.
 //
 // It is safe to destroy this object as soon as Wait() returns.
 class CompletionEvent {
  public:
   CompletionEvent()
       : event_(false /* manual_reset */, false /* initially_signaled */) {
-#if DCHECK_IS_ON
+#if DCHECK_IS_ON()
     waited_ = false;
     signaled_ = false;
 #endif
   }
 
   ~CompletionEvent() {
-#if DCHECK_IS_ON
+#if DCHECK_IS_ON()
     DCHECK(waited_);
     DCHECK(signaled_);
 #endif
   }
 
   void Wait() {
-#if DCHECK_IS_ON
+#if DCHECK_IS_ON()
     DCHECK(!waited_);
     waited_ = true;
 #endif
     base::ThreadRestrictions::ScopedAllowWait allow_wait;
     event_.Wait();
   }
 
   void Signal() {
-#if DCHECK_IS_ON
+#if DCHECK_IS_ON()
     DCHECK(!signaled_);
     signaled_ = true;
 #endif
     event_.Signal();
   }
 
  private:
   base::WaitableEvent event_;
-#if DCHECK_IS_ON
+#if DCHECK_IS_ON()
   // Used to assert that Wait() and Signal() are each called exactly once.
   bool waited_;
   bool signaled_;
 #endif
 };
 
 }  // namespace cc
 
 #endif  // CC_BASE_COMPLETION_EVENT_H_