Lower the priority of shared workers

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 <list>
 
 #include "base/compiler_specific.h"
@@ skipping 43 matching lines @@
   virtual void SetName(const string16& name) OVERRIDE;
   virtual void SetHandle(base::ProcessHandle handle) OVERRIDE;
 
   // Returns the handle of the child process. This can be called only after
   // OnProcessLaunched is called or it will be invalid and may crash.
   base::ProcessHandle GetHandle() const;
 
   // Removes this host from the host list. Calls ChildProcessHost::ForceShutdown
   void ForceShutdown();
 
+  // Callers can reduce the BrowserChildProcess' priority.
+  void SetBackgrounded(bool backgrounded);
+
   // Controls whether the child process should be terminated on browser
   // shutdown. Default is to always terminate.
   void SetTerminateChildOnShutdown(bool terminate_on_shutdown);
 
   // Called when an instance of a particular child is created in a page.
   static void NotifyProcessInstanceCreated(const ChildProcessData& data);
 
   BrowserChildProcessHostDelegate* delegate() const { return delegate_; }
 
   typedef std::list<BrowserChildProcessHostImpl*> BrowserChildProcessList;
@@ skipping 31 matching lines @@
   // Watches to see if the child process exits before the IPC channel has
   // been connected. Thereafter, its exit is determined by an error on the
   // IPC channel.
   base::WaitableEventWatcher early_exit_watcher_;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_