Convert some audio code to OnceCallback.

content/browser/renderer_host/media/audio_renderer_host_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 "content/browser/renderer_host/media/audio_renderer_host.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 39 matching lines @@
 const char kDefaultDeviceId[] = "";
 const char kSalt[] = "salt";
 const char kNondefaultDeviceId[] =
     "deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef";
 const char kBadDeviceId[] =
     "badbadbadbadbadbadbadbadbadbadbadbadbadbadbadbadbadbadbadbadbad1";
 const char kInvalidDeviceId[] = "invalid-device-id";
 
 void ValidateRenderFrameId(int render_process_id,
                            int render_frame_id,
-                           const base::Callback<void(bool)>& callback) {
+                           base::OnceCallback<void(bool)> callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   const bool frame_exists = (render_frame_id == kRenderFrameId);
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-                          base::Bind(callback, frame_exists));
+                          base::BindOnce(std::move(callback), frame_exists));
 }
 
 
 class MockAudioMirroringManager : public AudioMirroringManager {
  public:
   MockAudioMirroringManager() {}
   virtual ~MockAudioMirroringManager() {}
 
   MOCK_METHOD3(AddDiverter,
                void(int render_process_id,
@@ skipping 548 matching lines @@
 }
 
 TEST_F(AudioRendererHostTest, CreateFailsForInvalidRenderFrame) {
   CreateWithInvalidRenderFrameId();
   Close();
 }
 
 // TODO(hclam): Add tests for data conversation in low latency mode.
 
 }  // namespace content