Remove ContextClient from NavigatorCredentialManager

third_party/WebKit/Source/modules/credentialmanager/NavigatorCredentials.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 NavigatorCredentials_h
 #define NavigatorCredentials_h
 
-#include "core/dom/ContextLifecycleObserver.h"
 #include "core/frame/Navigator.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class CredentialsContainer;
 class Navigator;
 
 class NavigatorCredentials final
     : public GarbageCollected<NavigatorCredentials>,
-      public Supplement<Navigator>,
-      public ContextClient {
+      public Supplement<Navigator> {
   USING_GARBAGE_COLLECTED_MIXIN(NavigatorCredentials);
 
  public:
   static NavigatorCredentials& from(Navigator&);
   // NavigatorCredentials.idl
   static CredentialsContainer* credentials(Navigator&);
 
   DECLARE_TRACE();
 
  private:
   explicit NavigatorCredentials(Navigator&);
   CredentialsContainer* credentials();
 
   static const char* supplementName();
 
   Member<CredentialsContainer> m_credentialsContainer;
 };
 
 }  // namespace blink
 
 #endif  // NavigatorCredentials_h