Android: not to pause screen capture when Chrome is put to background

content/renderer/media/media_stream_dispatcher.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/renderer/media/media_stream_dispatcher.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "content/common/media/media_stream_messages.h"
@@ skipping 157 matching lines @@
   Send(new MediaStreamHostMsg_CloseDevice(routing_id(), label));
 }
 
 void MediaStreamDispatcher::OnStreamStarted(const std::string& label) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "MediaStreamDispatcher::OnStreamStarted(" << label << ")";
 
   Send(new MediaStreamHostMsg_StreamStarted(label));
 }
 
+StreamDeviceInfoArray MediaStreamDispatcher::GetNonScreenCaptureDevices() {
+  StreamDeviceInfoArray video_array;
+  for (const auto& stream_it : label_stream_map_) {
+    for (const auto& video_device : stream_it.second.video_array) {
+      if (!IsScreenCaptureMediaType(video_device.device.type))
+        video_array.push_back(video_device);
+    }
+  }
+  return video_array;
+}
+
 void MediaStreamDispatcher::OnDestruct() {
   // Do not self-destruct. UserMediaClientImpl owns |this|.
 }
 
 bool MediaStreamDispatcher::Send(IPC::Message* message) {
   if (!RenderThread::Get()) {
     delete message;
     return false;
   }
 
@@ skipping 169 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   LabelStreamMap::iterator it = label_stream_map_.find(label);
   if (it == label_stream_map_.end() ||
       it->second.video_array.size() <= static_cast<size_t>(index)) {
     return StreamDeviceInfo::kNoId;
   }
   return it->second.video_array[index].session_id;
 }
 
 }  // namespace content