Ensures that audio tasks cannot run after AudioManager is deleted.

media/audio/alsa/alsa_output_unittest.cc

 // Copyright 2013 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 <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
@@ skipping 160 matching lines @@
   static char kSurround41[];
   static char kSurround50[];
   static char kSurround51[];
   static char kSurround70[];
   static char kSurround71[];
   static void* kFakeHints[];
   static char kGenericSurround50[];
 
   base::TestMessageLoop message_loop_;
   StrictMock<MockAlsaWrapper> mock_alsa_wrapper_;
-  std::unique_ptr<StrictMock<MockAudioManagerAlsa>, AudioManagerDeleter>
-      mock_manager_;
+  std::unique_ptr<StrictMock<MockAudioManagerAlsa>> mock_manager_;
   scoped_refptr<DataBuffer> packet_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AlsaPcmOutputStreamTest);
 };
 
 const ChannelLayout AlsaPcmOutputStreamTest::kTestChannelLayout =
     CHANNEL_LAYOUT_STEREO;
 const int AlsaPcmOutputStreamTest::kTestSampleRate =
     AudioParameters::kAudioCDSampleRate;
@@ skipping 685 matching lines @@
 
   // TODO(ajwong): Find a way to test whether or not another task has been
   // posted so we can verify that the Alsa code will indeed break the task
   // posting loop.
 
   test_stream->TransitionTo(AlsaPcmOutputStream::kIsClosed);
   test_stream->Close();
 }
 
 }  // namespace media