Remove use of deprecated MessageLoop methods in mojo.

mojo/android/javatests/mojo_test_case.cc

Index: mojo/android/javatests/mojo_test_case.cc
diff --git a/mojo/android/javatests/mojo_test_case.cc b/mojo/android/javatests/mojo_test_case.cc
index 176e9bc0beb59ee34717ba47fb0805981f2db60a..6d88985df8b0b00eef74f00acaec84dda2c140a6 100644
--- a/mojo/android/javatests/mojo_test_case.cc
+++ b/mojo/android/javatests/mojo_test_case.cc
@@ -8,10 +8,13 @@
 #include "base/android/scoped_java_ref.h"
 #include "base/at_exit.h"
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/test/test_support_android.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "jni/MojoTestCase_jni.h"
 #include "mojo/message_pump/message_pump_mojo.h"
 
@@ -49,7 +52,7 @@ static void RunLoop(JNIEnv* env,
                     jlong timeout_ms) {
   base::RunLoop run_loop;
   if (timeout_ms) {
-    base::MessageLoop::current()->PostDelayedTask(
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
         base::TimeDelta::FromMilliseconds(timeout_ms));
     run_loop.Run();