Convert some audio code to OnceCallback.

media/audio/audio_output_controller_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/audio/audio_output_controller.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
@@ skipping 150 matching lines @@
   void ChangeDevice() {
     // Expect the event handler to receive one OnControllerPaying() call and no
     // OnControllerPaused() call.
     EXPECT_CALL(mock_event_handler_, OnControllerPlaying());
     EXPECT_CALL(mock_event_handler_, OnControllerPaused()).Times(0);
 
     // Simulate a device change event to AudioOutputController from the
     // AudioManager.
     audio_manager_->GetTaskRunner()->PostTask(
         FROM_HERE,
-        base::Bind(&AudioOutputController::OnDeviceChange, controller_));
+        base::BindOnce(&AudioOutputController::OnDeviceChange, controller_));
   }
 
   void Divert(bool was_playing, int num_times_to_be_started) {
     if (was_playing) {
       // Expect the handler to receive one OnControllerPlaying() call as a
       // result of the stream switching.
       EXPECT_CALL(mock_event_handler_, OnControllerPlaying());
     }
 
     EXPECT_CALL(mock_stream_, Open())
@@ skipping 60 matching lines @@
     EXPECT_CALL(*sink, Close());
     controller_->StopDuplicating(sink);
     base::RunLoop().RunUntilIdle();
   }
 
   void Close() {
     EXPECT_CALL(mock_sync_reader_, Close());
 
     base::RunLoop run_loop;
     base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(&AudioOutputController::Close, controller_,
-                              run_loop.QuitClosure()));
+        FROM_HERE, base::BindOnce(&AudioOutputController::Close, controller_,
+                                  run_loop.QuitClosure()));
     run_loop.Run();
   }
 
   // These help make test sequences more readable.
   void DivertNeverPlaying() { Divert(false, 0); }
   void DivertWillEventuallyBeTwicePlayed() { Divert(false, 2); }
   void DivertWhilePlaying() { Divert(true, 1); }
   void RevertWasNotPlaying() { Revert(false); }
   void RevertWhilePlaying() { Revert(true); }
 
@@ skipping 119 matching lines @@
   // When diverted stream pulls data, it would trigger a push to sink.
   EXPECT_CALL(mock_sink, OnDataCheck(kBufferNonZeroData));
   ReadDivertedAudioData();
 
   StopDuplicating(&mock_sink);
   RevertWhilePlaying();
   Close();
 }
 
 }  // namespace media