Remove remaining calls to deprecated MessageLoop methods on Mac.

content/browser/renderer_host/text_input_client_mac_unittest.mm

Index: content/browser/renderer_host/text_input_client_mac_unittest.mm
diff --git a/content/browser/renderer_host/text_input_client_mac_unittest.mm b/content/browser/renderer_host/text_input_client_mac_unittest.mm
index e953183ddaeeb461436a45375b9017ecdae64786..ac50233e1993471886b4fbad9f217c03ed9c1232 100644
--- a/content/browser/renderer_host/text_input_client_mac_unittest.mm
+++ b/content/browser/renderer_host/text_input_client_mac_unittest.mm
@@ -9,6 +9,7 @@
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
@@ -69,7 +70,7 @@ class TextInputClientMacTest : public testing::Test {
   void PostTask(const tracked_objects::Location& from_here,
                 const base::Closure& task,
                 const base::TimeDelta delay) {
-    thread_.message_loop()->PostDelayedTask(from_here, task, delay);
+    thread_.task_runner()->PostDelayedTask(from_here, task, delay);
   }
 
   RenderWidgetHostImpl* widget() { return widget_.get(); }