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

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 3d26c84e876392fc8054f3ba5521b3cfc2cdb1e9..7a630e2fb847e86cf5039dbdbbc567f001dffc43 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -178,12 +178,10 @@ void GpuChildThread::OnInitialize() {
   // Defer creation of the render thread. This is to prevent it from handling
   // IPC messages before the sandbox has been enabled and all other necessary
   // initialization has succeeded.
-  gpu_channel_manager_.reset(
-      new GpuChannelManager(GetRouter(),
-                            watchdog_thread_.get(),
-                            ChildProcess::current()->io_message_loop_proxy(),
-                            ChildProcess::current()->GetShutDownEvent(),
-                            channel()));
+  gpu_channel_manager_.reset(new GpuChannelManager(
+      GetRouter(), watchdog_thread_.get(),
+      ChildProcess::current()->io_task_runner(),
+      ChildProcess::current()->GetShutDownEvent(), channel()));
 
 #if defined(USE_OZONE)
   ui::OzonePlatform::GetInstance()