Add more video capture log messages to WebRTC log

content/browser/renderer_host/media/video_capture_controller.cc

Index: content/browser/renderer_host/media/video_capture_controller.cc
diff --git a/content/browser/renderer_host/media/video_capture_controller.cc b/content/browser/renderer_host/media/video_capture_controller.cc
index c291a144674681c899d516bdfe6f1b2720699c9f..7015834bc15b19c4d821098126bc02c25ee0328a 100644
--- a/content/browser/renderer_host/media/video_capture_controller.cc
+++ b/content/browser/renderer_host/media/video_capture_controller.cc
@@ -447,6 +447,7 @@ void VideoCaptureController::OnFrameReadyInBuffer(
       }
     }
     UMA_HISTOGRAM_COUNTS("Media.VideoCapture.FrameRate", frame_rate);
+    OnLog("First frame received at VideoCaptureController");
     has_received_frames_ = true;
   }
 }
@@ -484,6 +485,8 @@ void VideoCaptureController::OnStarted() {
 }
 
 void VideoCaptureController::OnStartedUsingGpuDecode() {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  OnLog("StartedUsingGpuDecode");
   PerformForClientsWithOpenSession(base::Bind(&CallOnStartedUsingGpuDecode));
 }