Ultimately, all of webrtc/media/devices should be deleted, since it is unused in webrtc and has no unit tests. But for the time being we need to keep cricket::GtkVideoRenderer since there are a few applications depending on it. BUG=webrtc:5924 Review-Url: https://codereview.webrtc.org/2460793002 Cr-Commit-Position: refs/heads/master@{#14835}