Supplement should have a Member to the corresponding Supplementable object

third_party/WebKit/Source/modules/remoteplayback/HTMLMediaElementRemotePlayback.h

 // Copyright 2015 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 HTMLMediaElementRemotePlayback_h
 #define HTMLMediaElementRemotePlayback_h
 
+#include "core/html/HTMLMediaElement.h"
 #include "modules/ModulesExport.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class HTMLMediaElement;
 class QualifiedName;
 class RemotePlayback;
 
@@ skipping 17 matching lines @@
 
  private:
   static const char* supplementName();
 
   Member<RemotePlayback> m_remote;
 };
 
 }  // namespace blink
 
 #endif  // HTMLMediaElementRemotePlayback_h