Send notification about outgoing p2p packets from browser to renderer.

content/browser/renderer_host/p2p/socket_host.h

Index: content/browser/renderer_host/p2p/socket_host.h
diff --git a/content/browser/renderer_host/p2p/socket_host.h b/content/browser/renderer_host/p2p/socket_host.h
index 0abb74e4f6d38f8acb1431bd9564bba36e9bf0f8..9fe985dc717d7334f2def746f01179cfa0d1865a 100644
--- a/content/browser/renderer_host/p2p/socket_host.h
+++ b/content/browser/renderer_host/p2p/socket_host.h
@@ -62,15 +62,6 @@ class CONTENT_EXPORT P2PSocketHost {
     STATE_ERROR,
   };
 
-  // Maximum size of send buffers. Must be big enough to fit data for
-  // one data burst. Send buffers size needs to be limited to prevent
-  // from consuming too much memory with misbehaving renderer process.
-  //
-  // TODO(sergeyu): Consider implementing congestion notifications to
-  // minimize buffering. This will require some fixes in libjingle,
-  // see crbug.com/91495 .
-  static const int kMaxSendBufferSize = 256 * 1024;
-
   P2PSocketHost(IPC::Sender* message_sender, int id);
 
   // Verifies that the packet |data| has a valid STUN header. In case