Lower the priority of shared workers

content/browser/browser_child_process_host_impl.cc

 // 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.
 
 #include "content/browser/browser_child_process_host_impl.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 187 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   data_.handle = handle;
 }
 
 void BrowserChildProcessHostImpl::ForceShutdown() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   g_child_process_list.Get().remove(this);
   child_process_host_->ForceShutdown();
 }
 
+void BrowserChildProcessHostImpl::SetBackgrounded(bool backgrounded) {
+  child_process_->SetProcessBackgrounded(backgrounded);
+}
+
 void BrowserChildProcessHostImpl::SetTerminateChildOnShutdown(
     bool terminate_on_shutdown) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   child_process_->SetTerminateChildOnShutdown(terminate_on_shutdown);
 }
 
 void BrowserChildProcessHostImpl::NotifyProcessInstanceCreated(
     const ChildProcessData& data) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   FOR_EACH_OBSERVER(BrowserChildProcessObserver, g_observers.Get(),
@@ skipping 120 matching lines @@
 
 void BrowserChildProcessHostImpl::OnProcessExitedEarly(
     base::WaitableEvent* event) {
   DeleteProcessWaitableEvent(event);
   OnChildDisconnected();
 }
 
 #endif
 
 }  // namespace content