Ensures that audio tasks cannot run after AudioManager is deleted.

media/audio/audio_input_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 "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
@@ skipping 71 matching lines @@
   AudioInputControllerTest()
       : audio_thread_("AudioThread"),
         suspend_event_(WaitableEvent::ResetPolicy::AUTOMATIC,
                        WaitableEvent::InitialState::NOT_SIGNALED) {
     audio_thread_.StartAndWaitForTesting();
     audio_manager_ =
         AudioManager::CreateForTesting(audio_thread_.task_runner());
   }
   ~AudioInputControllerTest() override {
     audio_task_runner()->PostTask(
-        FROM_HERE, base::Bind(&AudioInputControllerTest::DeleteAudioManager,
-                              base::Unretained(this)));
+        FROM_HERE, base::Bind(&AudioManager::Shutdown,
+                              base::Unretained(audio_manager_.get())));
     audio_thread_.Stop();
   }
 
   scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner() const {
     return audio_thread_.task_runner();
   }
 
   void SuspendAudioThread() {
     audio_task_runner()->PostTask(
         FROM_HERE, base::Bind(&AudioInputControllerTest::WaitForResume,
                               base::Unretained(this)));
   }
 
   void ResumeAudioThread() { suspend_event_.Signal(); }
 
  private:
-  void DeleteAudioManager() { audio_manager_.reset(); }
   void WaitForResume() { suspend_event_.Wait(); }
 
  protected:
   base::Thread audio_thread_;
   base::MessageLoop message_loop_;
-  ScopedAudioManagerPtr audio_manager_;
+  std::unique_ptr<AudioManager> audio_manager_;
   WaitableEvent suspend_event_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioInputControllerTest);
 };
 
 // Test AudioInputController for create and close without recording audio.
 TEST_F(AudioInputControllerTest, CreateAndClose) {
   base::RunLoop run_loop;
 
@@ skipping 98 matching lines @@
   controller->Record();
 
   controller->Close(base::MessageLoop::QuitWhenIdleClosure());
   base::RunLoop().Run();
 
   controller->Close(base::MessageLoop::QuitWhenIdleClosure());
   base::RunLoop().Run();
 }
 
 }  // namespace media