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

content/renderer/media/media_stream_dispatcher.h

Index: content/renderer/media/media_stream_dispatcher.h
diff --git a/content/renderer/media/media_stream_dispatcher.h b/content/renderer/media/media_stream_dispatcher.h
index 18803c1277de6a49f457159d4f794c91f45b42cc..a243e1c3ebd934e22fe3bc727086b12c01b75131 100644
--- a/content/renderer/media/media_stream_dispatcher.h
+++ b/content/renderer/media/media_stream_dispatcher.h
@@ -75,6 +75,9 @@ class CONTENT_EXPORT MediaStreamDispatcher
   // This method is called when the stream is started successfully.
   void OnStreamStarted(const std::string& label);
 
+  // Get all the media devices of video capture, e.g. webcam.

[miu, 2017/03/22 23:09:42]

nit: It would be helpful to add to this comment, something like "This is the set
of devices that should be suspended when the content frame is no longer being
shown to the user."

[braveyao, 2017/03/23 03:44:19]

Done.

+  void GetVideoCaptureDevices(StreamDeviceInfoArray* video_array);

[miu, 2017/03/22 23:09:43]

This naming doesn't suggest it is filtering based on certain device tyes. How
about: GetNonScreenCaptureDevices()

[braveyao, 2017/03/23 03:44:20]

Done.

+
   // Check if the label is a valid stream.
   virtual bool IsStream(const std::string& label);
   // Get the video session_id given a label. The label identifies a stream.
@@ -90,6 +93,7 @@ class CONTENT_EXPORT MediaStreamDispatcher
   FRIEND_TEST_ALL_PREFIXES(MediaStreamDispatcherTest, BasicVideoDevice);
   FRIEND_TEST_ALL_PREFIXES(MediaStreamDispatcherTest, TestFailure);
   FRIEND_TEST_ALL_PREFIXES(MediaStreamDispatcherTest, CancelGenerateStream);
+  FRIEND_TEST_ALL_PREFIXES(MediaStreamDispatcherTest, GetVideoCaptureDevices);
 
   struct Request;