Use a new Supplement constructor in Navigator supplements (part 2)

third_party/WebKit/Source/modules/presentation/NavigatorPresentation.h

 // Copyright 2014 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 NavigatorPresentation_h
 #define NavigatorPresentation_h
 
 #include "core/frame/Navigator.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Navigator;
 class Presentation;
 
 class NavigatorPresentation final
     : public GarbageCollected<NavigatorPresentation>,
       public Supplement<Navigator> {
   USING_GARBAGE_COLLECTED_MIXIN(NavigatorPresentation);
 
  public:
   static NavigatorPresentation& from(Navigator&);
   static Presentation* presentation(Navigator&);
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  NavigatorPresentation();
+  explicit NavigatorPresentation(Navigator&);
 
   static const char* supplementName();
   Presentation* presentation();
 
   Member<Presentation> m_presentation;
 };
 
 }  // namespace blink
 
 #endif  // NavigatorPresentation_h