Remove calls to deprecated MessageLoop methods on Windows and Linux.

ipc/ipc_channel_win.cc

Index: ipc/ipc_channel_win.cc
diff --git a/ipc/ipc_channel_win.cc b/ipc/ipc_channel_win.cc
index 4321b04beef1c6cf788701ebd52d95d69f9aea0e..66c14c84eef49975bc7f6f03a5be844bad54efcd 100644
--- a/ipc/ipc_channel_win.cc
+++ b/ipc/ipc_channel_win.cc
@@ -16,6 +16,7 @@
 #include "base/pickle.h"
 #include "base/process/process_handle.h"
 #include "base/rand_util.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_checker.h"
@@ -412,13 +413,10 @@ bool ChannelWin::Connect() {
     // Complete setup asynchronously. By not setting input_state_.is_pending
     // to true, we indicate to OnIOCompleted that this is the special
     // initialization signal.
-    base::MessageLoopForIO::current()->PostTask(
+    base::MessageLoopForIO::current()->task_runner()->PostTask(
         FROM_HERE,
-        base::Bind(&ChannelWin::OnIOCompleted,
-                   weak_factory_.GetWeakPtr(),
-                   &input_state_.context,
-                   0,
-                   0));
+        base::Bind(&ChannelWin::OnIOCompleted, weak_factory_.GetWeakPtr(),
+                   &input_state_.context, 0, 0));
   }
 
   if (!waiting_connect_)