Update from https://crrev.com/327068

base/win/registry.cc

 // Copyright (c) 2012 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/win/registry.h"
 
 #include <shlwapi.h>
 #include <algorithm>
 
 #include "base/logging.h"
@@ skipping 20 matching lines @@
 
 // Mask to pull WOW64 access flags out of REGSAM access.
 const REGSAM kWow64AccessMask = KEY_WOW64_32KEY | KEY_WOW64_64KEY;
 
 }  // namespace
 
 // Watches for modifications to a key.
 class RegKey::Watcher : public ObjectWatcher::Delegate {
  public:
   explicit Watcher(RegKey* owner) : owner_(owner) {}
-  ~Watcher() {}
+  ~Watcher() override {}
 
   bool StartWatching(HKEY key, const ChangeCallback& callback);
 
   // Implementation of ObjectWatcher::Delegate.
   void OnObjectSignaled(HANDLE object) override {
     DCHECK(watch_event_.IsValid() && watch_event_.Get() == object);
     ChangeCallback callback = callback_;
     callback_.Reset();
     callback.Run();
   }
@@ skipping 619 matching lines @@
     } else {
       index_ = count - 1;
     }
   }
 
   Read();
 }
 
 }  // namespace win
 }  // namespace base