[Mojo Video Capture] Fix VideoCaptureManager exposing implementation details to clients

content/browser/renderer_host/media/audio_output_authorization_handler_unittest.cc

 // Copyright 2016 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.
 
 // Unit tests for AudioOutputAuthorizationHandler.
 
 #include "content/browser/renderer_host/media/audio_output_authorization_handler.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 51 matching lines @@
         switches::kUseFakeDeviceForMediaStream);
 
     thread_bundle_ = base::MakeUnique<TestBrowserThreadBundle>(
         TestBrowserThreadBundle::Options::REAL_IO_THREAD);
     audio_thread_ = base::MakeUnique<AudioManagerThread>();
     audio_manager_.reset(new media::FakeAudioManager(
         audio_thread_->task_runner(), audio_thread_->worker_task_runner(),
         &log_factory_));
     audio_system_ = media::AudioSystemImpl::Create(audio_manager_.get());
     media_stream_manager_ =
-        base::MakeUnique<MediaStreamManager>(audio_system_.get());
+        MediaStreamManager::CreateWithDefaults(audio_system_.get());
     // Make sure everything is done initializing:
     SyncWithAllThreads();
   }
 
   ~AudioOutputAuthorizationHandlerTest() override { SyncWithAllThreads(); }
 
  protected:
   MediaStreamManager* GetMediaStreamManager() {
     return media_stream_manager_.get();
   }
@@ skipping 246 matching lines @@
       (base::Bind(&AudioOutputAuthorizationHandler::RequestDeviceAuthorization,
                   base::Unretained(handler.get()), kRenderFrameId, kSessionId,
                   std::string(), BadSecurityOrigin(), listener.Get())));
 
   SyncWithAllThreads();
   BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, handler.release());
   SyncWithAllThreads();
 }
 
 }  // namespace content