Remove unused linked_ptr inclusion

components/guest_view/renderer/guest_view_container_dispatcher.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 COMPONENTS_GUEST_VIEW_RENDERER_GUEST_VIEW_CONTAINER_DISPATCHER_H_
 #define COMPONENTS_GUEST_VIEW_RENDERER_GUEST_VIEW_CONTAINER_DISPATCHER_H_
 
 #include "base/macros.h"
-#include "base/memory/linked_ptr.h"
 #include "content/public/renderer/render_thread_observer.h"
 #include "ipc/ipc_message.h"
 
 namespace guest_view {
 
 // Dispatcher used to route messages to GuestViewContainer.
 class GuestViewContainerDispatcher : public content::RenderThreadObserver {
  public:
   GuestViewContainerDispatcher();
   ~GuestViewContainerDispatcher() override;
 
  protected:
   // Returns true if |message| is handled for a GuestViewContainer.
   virtual bool HandlesMessage(const IPC::Message& message);
 
  private:
   // content::RenderThreadObserver implementation.
   bool OnControlMessageReceived(const IPC::Message& message) override;
 
   DISALLOW_COPY_AND_ASSIGN(GuestViewContainerDispatcher);
 };
 
 }  // namespace guest_view
 
 #endif  // COMPONENTS_GUEST_VIEW_RENDERER_GUEST_VIEW_CONTAINER_DISPATCHER_H_