Remove unused includes of shell::InterfaceRegistry

content/public/browser/browser_child_process_host_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_DELEGATE_H_
 
 #include "content/common/content_export.h"
 #include "ipc/ipc_listener.h"
 
 namespace shell {
 class InterfaceProvider;
-class InterfaceRegistry;
 }
 
 namespace content {
 
 // Interface that all users of BrowserChildProcessHost need to provide.
 class CONTENT_EXPORT BrowserChildProcessHostDelegate : public IPC::Listener {
  public:
   ~BrowserChildProcessHostDelegate() override {}
 
   // Delegates return true if it's ok to shut down the child process (which is
@@ skipping 15 matching lines @@
   virtual void OnProcessCrashed(int exit_code) {}
 
   // Returns the shell::InterfaceProvider the browser process can use to bind
   // interfaces exposed to it from the child.
   virtual shell::InterfaceProvider* GetRemoteInterfaces();
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_DELEGATE_H_