Add browser test for getusermedia and unavailable audio device.

media/audio/audio_manager.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_manager.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 285 matching lines @@
   }
 #endif
 }
 
 // Forward declaration of the platform specific AudioManager factory function.
 ScopedAudioManagerPtr CreateAudioManager(
     scoped_refptr<base::SingleThreadTaskRunner> task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner,
     AudioLogFactory* audio_log_factory);
 
+void AudioManager::SetMaxStreamCountForTesting(int max_input, int max_output) {
+  NOTREACHED();
+}
+
 AudioManager::AudioManager(
     scoped_refptr<base::SingleThreadTaskRunner> task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner)
     : task_runner_(std::move(task_runner)),
       worker_task_runner_(std::move(worker_task_runner)) {
   DCHECK(task_runner_);
   DCHECK(worker_task_runner_);
 
   if (g_last_created) {
     // We create multiple instances of AudioManager only when testing.
@@ skipping 60 matching lines @@
   return g_helper.Pointer()->app_name();
 }
 #endif
 
 // static
 AudioManager* AudioManager::Get() {
   return g_last_created;
 }
 
 }  // namespace media