Revert of Removed unused cricket::VideoCapturer methods

webrtc/api/videosource.cc

Index: webrtc/api/videosource.cc
diff --git a/webrtc/api/videosource.cc b/webrtc/api/videosource.cc
index 7d72e2a28076b6765791892b81517047595e9943..3a55cd501899ff7d37b5ecbed6ab1c9019165e2a 100644
--- a/webrtc/api/videosource.cc
+++ b/webrtc/api/videosource.cc
@@ -55,6 +55,7 @@
     case cricket::CS_RUNNING:
       return MediaSourceInterface::kLive;
     case cricket::CS_FAILED:
+    case cricket::CS_NO_DEVICE:
     case cricket::CS_STOPPED:
       return MediaSourceInterface::kEnded;
     case cricket::CS_PAUSED:
@@ -402,7 +403,7 @@
 // This signal is triggered for all video capturers. Not only the one we are
 // interested in.
 void VideoSource::OnStateChange(cricket::VideoCapturer* capturer,
-                                cricket::CaptureState capture_state) {
+                                     cricket::CaptureState capture_state) {
   if (capturer == video_capturer_.get()) {
     SetState(GetReadyState(capture_state));
   }