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

chrome/renderer/media/cast_session_delegate.h

Index: chrome/renderer/media/cast_session_delegate.h
diff --git a/chrome/renderer/media/cast_session_delegate.h b/chrome/renderer/media/cast_session_delegate.h
index 1f59e9daa51f6af985964e263a3d2fdcc88f90ee..5f9ed7ed2be5192d84d7f602826494d664109a2d 100644
--- a/chrome/renderer/media/cast_session_delegate.h
+++ b/chrome/renderer/media/cast_session_delegate.h
@@ -5,9 +5,11 @@
 #ifndef CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_
 #define CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_
 
+#include <map>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_checker.h"
@@ -58,8 +60,11 @@ class CastSessionDelegate {
   void StartUDP(const net::IPEndPoint& local_endpoint,
                 const net::IPEndPoint& remote_endpoint);
 
-  // Returns raw event logs in serialized format since last call.
-  void GetEventLogsAndReset(const EventLogsCallback& callback);
+  void ToggleLogging(const int stream_id,

[Alpha Left Google, 2014/02/24 23:25:51]

Is |stream_id| useful given there's already |is_audio|? Also there's no need to
make int/bool as const.

[imcheng, 2014/02/25 08:10:18]

Done and see other reply.

+                     const bool enable,
+                     const bool is_audio);
+  void GetEventLogsAndReset(const EventLogsCallback& callback,
+                            const int stream_id);
 
  protected:
   // Callback with the result of the initialization.
@@ -90,13 +95,14 @@ class CastSessionDelegate {
   FrameInputAvailableCallback audio_frame_input_available_callback_;
   FrameInputAvailableCallback video_frame_input_available_callback_;
 
-  scoped_ptr<media::cast::EncodingEventSubscriber> audio_event_subscriber_;
-  scoped_ptr<media::cast::EncodingEventSubscriber> video_event_subscriber_;
-
   net::IPEndPoint local_endpoint_;
   net::IPEndPoint remote_endpoint_;
   bool transport_configured_;
 
+  typedef std::map<int, linked_ptr<media::cast::EncodingEventSubscriber> >
+      EventSubscriberMap;
+  EventSubscriberMap event_subscriber_map_;
+
   // Proxy to the IO message loop.
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;