[Mojo Video Capture] Introduce abstraction VideoCaptureSystem

content/browser/renderer_host/media/media_stream_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 "content/browser/renderer_host/media/media_stream_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 31 matching lines @@
 #include "content/public/browser/web_contents_media_capture_id.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/media_stream_request.h"
 #include "crypto/hmac.h"
 #include "media/audio/audio_device_description.h"
 #include "media/audio/audio_system.h"
 #include "media/base/audio_parameters.h"
 #include "media/base/channel_layout.h"
 #include "media/base/media_switches.h"
-#include "media/capture/video/video_capture_device_factory.h"
+#include "media/capture/video/video_capture_system.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 
 #if defined(OS_WIN)
 #include "base/win/scoped_com_initializer.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/audio/cras_audio_handler.h"
 #endif
@@ skipping 1183 matching lines @@
           "457525 MediaStreamManager::InitializeDeviceManagersOnIOThread 3"));
   // We want to be notified of IO message loop destruction to delete the thread
   // and the device managers.
   base::MessageLoop::current()->AddDestructionObserver(this);
 
   // TODO(dalecurtis): Remove ScopedTracker below once crbug.com/457525 is
   // fixed.
   tracked_objects::ScopedTracker tracking_profile4(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "457525 MediaStreamManager::InitializeDeviceManagersOnIOThread 4"));
+  auto video_capture_system = base::MakeUnique<media::VideoCaptureSystem>(
+      media::VideoCaptureDeviceFactory::CreateFactory(
+          BrowserThread::GetTaskRunnerForThread(BrowserThread::UI)));
 #if defined(OS_WIN)
   // Use an STA Video Capture Thread to try to avoid crashes on enumeration of
   // buggy third party Direct Show modules, http://crbug.com/428958.
   video_capture_thread_.init_com_with_mta(false);
   CHECK(video_capture_thread_.Start());
   video_capture_manager_ = new VideoCaptureManager(
-      media::VideoCaptureDeviceFactory::CreateFactory(
-          BrowserThread::GetTaskRunnerForThread(BrowserThread::UI)),
-      video_capture_thread_.task_runner());
+      std::move(video_capture_system), video_capture_thread_.task_runner());
 #else
   video_capture_manager_ = new VideoCaptureManager(
-      media::VideoCaptureDeviceFactory::CreateFactory(
-          BrowserThread::GetTaskRunnerForThread(BrowserThread::UI)),
-      audio_system_->GetTaskRunner());
+      std::move(video_capture_system), audio_system_->GetTaskRunner());
 #endif
 
   video_capture_manager_->RegisterListener(this);
 
   media_devices_manager_.reset(
       new MediaDevicesManager(audio_system_, video_capture_manager_, this));
 }
 
 void MediaStreamManager::Opened(MediaStreamType stream_type,
                                 int capture_session_id) {
@@ skipping 488 matching lines @@
     request->ui_proxy->OnStarted(
         base::Bind(&MediaStreamManager::StopMediaStreamFromBrowser,
                    base::Unretained(this), label),
         base::Bind(&MediaStreamManager::OnMediaStreamUIWindowId,
                    base::Unretained(this), request->video_type(),
                    request->devices));
   }
 }
 
 }  // namespace content