base: Move renderer threads to the appropriate cpuset.

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 8fa0804beb1aee275d7999b4907a34e1915a3307..20e26ca7c143e348fa4ae0c65e395e3abc70bf91 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -749,6 +749,13 @@ std::unique_ptr<base::SharedMemory> ChildThreadImpl::AllocateSharedMemory(
   return shared_buf;
 }
 
+void ChildThreadImpl::SetThreadPriority(base::PlatformThreadId id,
+                                        base::ThreadPriority priority) {
+#if defined(OS_LINUX)
+  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))