Cast: Add JS API to get raw events logs from cast extension.

chrome/renderer/media/cast_session.cc

Index: chrome/renderer/media/cast_session.cc
diff --git a/chrome/renderer/media/cast_session.cc b/chrome/renderer/media/cast_session.cc
index 5fcf3f9f1f8ae33d632c29346cf059e9f6bd374f..1b2190ef9795a003e1b4093794b4c09cc6b006cf 100644
--- a/chrome/renderer/media/cast_session.cc
+++ b/chrome/renderer/media/cast_session.cc
@@ -11,6 +11,7 @@
 #include "media/base/video_frame.h"
 #include "media/cast/cast_config.h"
 #include "media/cast/cast_sender.h"
+#include "media/cast/logging/logging_defines.h"
 
 CastSession::CastSession()
     : delegate_(new CastSessionDelegate()),
@@ -63,10 +64,21 @@ void CastSession::StartUDP(const net::IPEndPoint& local_endpoint,
           remote_endpoint));
 }
 
-void CastSession::GetEventLogsAndReset(const EventLogsCallback& callback) {
+void CastSession::StartLogging(const int stream_id, const bool is_audio) {
+  io_message_loop_proxy_->PostTask(
+      FROM_HERE,
+      base::Bind(&CastSessionDelegate::StartLogging,
+                 base::Unretained(delegate_.get()),
+                 stream_id,
+                 is_audio));
+}
+
+void CastSession::GetEventLogsAndReset(const EventLogsCallback& callback,
+                                       const int stream_id) {
   io_message_loop_proxy_->PostTask(
       FROM_HERE,
       base::Bind(&CastSessionDelegate::GetEventLogsAndReset,
                  base::Unretained(delegate_.get()),
-                 callback));
+                 media::BindToCurrentLoop(callback),
+                 stream_id));
 }