Begin adding support for tab mirroring via the MediaStream audio/video capturing

content/common/media/media_stream_options.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/common/media/media_stream_options.h"
 
+#include "base/logging.h"
+
 namespace media_stream {
 
+StreamOptions::StreamOptions()
+    : audio_type(content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE),
+      video_type(content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE) {}
+
+StreamOptions::StreamOptions(bool user_audio, bool user_video)
+    : audio_type(user_audio ?
+                     content::MEDIA_STREAM_DEVICE_TYPE_USER_AUDIO_CAPTURE :
+                     content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE),
+      video_type(user_video ?
+                     content::MEDIA_STREAM_DEVICE_TYPE_USER_VIDEO_CAPTURE :
+                     content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE) {}
+
+StreamOptions::StreamOptions(MediaStreamType audio_type,
+                             MediaStreamType video_type,
+                             const std::string& opt_device_id)
+    : audio_type(audio_type), video_type(video_type),
+      opt_device_id(opt_device_id) {
+  DCHECK(IsAudioMediaStreamDeviceType(audio_type) ||
+         audio_type == content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE);
+  DCHECK(IsVideoMediaStreamDeviceType(video_type) ||
+         video_type == content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE);
+}
+
 // static
 const int StreamDeviceInfo::kNoId = -1;
 
 StreamDeviceInfo::StreamDeviceInfo()
     : stream_type(content::MEDIA_STREAM_DEVICE_TYPE_NO_SERVICE),
       in_use(false),
       session_id(kNoId) {}
 
 StreamDeviceInfo::StreamDeviceInfo(MediaStreamType service_param,
                                    const std::string& name_param,
                                    const std::string& device_param,
                                    bool opened)
     : stream_type(service_param),
       name(name_param),
       device_id(device_param),
       in_use(opened),
       session_id(kNoId) {}
 
 // static
 bool StreamDeviceInfo::IsEqual(const StreamDeviceInfo& first,
                                const StreamDeviceInfo& second) {
   return first.stream_type == second.stream_type &&
       first.name == second.name &&
       first.device_id == second.device_id &&
       first.in_use == second.in_use &&
       first.session_id == second.session_id;
 }
 
 }  // namespace media_stream