Remove BrowserChildProcessHostImpl::SetBackgrounded

content/browser/browser_child_process_host_impl.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_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 83 matching lines @@
   void OnChannelError() override;
   void OnBadMessageReceived(const IPC::Message& message) override;
 
   // Terminates the process and logs a stack trace after a bad message was
   // received from the child process.
   void TerminateOnBadMessageReceived(const std::string& error);
 
   // Removes this host from the host list. Calls ChildProcessHost::ForceShutdown
   void ForceShutdown();
 
-  // Callers can reduce the BrowserChildProcess' priority.
-  void SetBackgrounded(bool backgrounded);
-
   // Adds an IPC message filter.
   void AddFilter(BrowserMessageFilter* filter);
 
   static void HistogramBadMessageTerminated(int process_type);
 
   BrowserChildProcessHostDelegate* delegate() const { return delegate_; }
 
   ChildConnection* child_connection() const {
     return child_connection_.get();
   }
@@ skipping 58 matching lines @@
   IPC::Channel* channel_ = nullptr;
   bool is_channel_connected_;
   bool notify_child_disconnected_;
 
   base::WeakPtrFactory<BrowserChildProcessHostImpl> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_