media: Update calls from RunAllPending() to RunUntilIdle().

media/audio/audio_low_latency_input_output_unittest.cc

Index: media/audio/audio_low_latency_input_output_unittest.cc
diff --git a/media/audio/audio_low_latency_input_output_unittest.cc b/media/audio/audio_low_latency_input_output_unittest.cc
index 9376db82b85a9a3ed9f32bc2d9ecfe0825820e1e..069244b88a0c37a1637c58ee06913fd5e995cf9f 100644
--- a/media/audio/audio_low_latency_input_output_unittest.cc
+++ b/media/audio/audio_low_latency_input_output_unittest.cc
@@ -455,7 +455,7 @@ TEST_F(AudioLowLatencyInputOutputTest, DISABLED_FullDuplexDelayMeasurement) {
   // All Close() operations that run on the mocked audio thread,
   // should be synchronous and not post additional close tasks to
   // mocked the audio thread. Hence, there is no need to call
-  // message_loop()->RunAllPending() after the Close() methods.
+  // message_loop()->RunUntilIdle() after the Close() methods.
   aos->Close();
   ais->Close();
 }