The browser-side video capture stack already emits log messages to webrtc logs to pinpoint issues seen in the wild, e.g. in hangouts sessions.

However, there are currently no such logs emitted from the code that runs in Renderers. This creates a in the logging covering the starting of video capture until a first frame is delivered to the JavaScript app.

The task is to make Renderers emit log messages when starting video capture to allow seeing at what state things get stuck in cases where video capture never successfully delivers a first frame but also does not raise any error.