content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/ppapi_plugin/ppapi_thread.cc

Index: content/ppapi_plugin/ppapi_thread.cc
diff --git a/content/ppapi_plugin/ppapi_thread.cc b/content/ppapi_plugin/ppapi_thread.cc
index 13babb43fcb28a2fc334b9ff5c13b733b50dfcd9..a02b64dff5dc6de0232a97a13f53093b95317fdf 100644
--- a/content/ppapi_plugin/ppapi_thread.cc
+++ b/content/ppapi_plugin/ppapi_thread.cc
@@ -175,8 +175,8 @@ void PpapiThread::OnChannelConnected(int32 peer_pid) {
 #endif
 }
 
-base::MessageLoopProxy* PpapiThread::GetIPCMessageLoop() {
-  return ChildProcess::current()->io_message_loop_proxy();
+base::SingleThreadTaskRunner* PpapiThread::GetIPCTaskRunner() {
+  return ChildProcess::current()->io_task_runner();
 }
 
 base::WaitableEvent* PpapiThread::GetShutdownEvent() {