base: Allow renderer thread priorities to be changed.

content/child/child_thread_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/child/child_thread_impl.h"
 
 #include <signal.h>
 #include <string>
 #include <utility>
 
@@ skipping 713 matching lines @@
     }
   } else {
     // Send is allowed to fail during shutdown. Return null in this case.
     if (out_of_memory)
       *out_of_memory = false;
     return nullptr;
   }
   return shared_buf;
 }
 
+#if defined(OS_LINUX)
+void ChildThreadImpl::SetThreadPriority(base::PlatformThreadId id,
+                                        base::ThreadPriority priority) {
+  Send(new ChildProcessHostMsg_SetThreadPriority(id, priority));
+}
+#endif
+
 bool ChildThreadImpl::OnMessageReceived(const IPC::Message& msg) {
   // Resource responses are sent to the resource dispatcher.
   if (resource_dispatcher_->OnMessageReceived(msg))
     return true;
   if (file_system_dispatcher_->OnMessageReceived(msg))
     return true;
 
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChildThreadImpl, msg)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown)
@@ skipping 103 matching lines @@
 void ChildThreadImpl::EnsureConnected() {
   VLOG(0) << "ChildThreadImpl::EnsureConnected()";
   base::Process::Current().Terminate(0, false);
 }
 
 bool ChildThreadImpl::IsInBrowserProcess() const {
   return static_cast<bool>(browser_process_io_runner_);
 }
 
 }  // namespace content