Remove calls to deprecated MessageLoop methods on Windows and Linux.

net/test/spawned_test_server/local_test_server_win.cc

Index: net/test/spawned_test_server/local_test_server_win.cc
diff --git a/net/test/spawned_test_server/local_test_server_win.cc b/net/test/spawned_test_server/local_test_server_win.cc
index 3e87e997b8432666b3d5c01e6ec44093b2b572bc..6f325e064c080d99bfe07645283ede3208e0fc6a 100644
--- a/net/test/spawned_test_server/local_test_server_win.cc
+++ b/net/test/spawned_test_server/local_test_server_win.cc
@@ -13,6 +13,7 @@
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/launch.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ -51,7 +52,7 @@ bool ReadData(HANDLE read_fd,
 
   // Prepare a timeout in case the server fails to start.
   bool unblocked = false;
-  thread.message_loop()->PostDelayedTask(
+  thread.task_runner()->PostDelayedTask(
       FROM_HERE, base::Bind(UnblockPipe, write_fd, bytes_max, &unblocked),
       TestTimeouts::action_max_timeout());