Send notification about outgoing p2p packets from browser to renderer.

content/renderer/p2p/socket_dispatcher.cc

Index: content/renderer/p2p/socket_dispatcher.cc
diff --git a/content/renderer/p2p/socket_dispatcher.cc b/content/renderer/p2p/socket_dispatcher.cc
index c999e621399c6e51197ae9b5086000453564e29c..7fe71eeb1c70f9c21b0b3cf7fecc909138cd9cf7 100644
--- a/content/renderer/p2p/socket_dispatcher.cc
+++ b/content/renderer/p2p/socket_dispatcher.cc
@@ -63,6 +63,7 @@ bool P2PSocketDispatcher::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(P2PMsg_GetHostAddressResult, OnGetHostAddressResult)
     IPC_MESSAGE_HANDLER(P2PMsg_OnSocketCreated, OnSocketCreated)
     IPC_MESSAGE_HANDLER(P2PMsg_OnIncomingTcpConnection, OnIncomingTcpConnection)
+    IPC_MESSAGE_HANDLER(P2PMsg_OnSendComplete, OnSendComplete)
     IPC_MESSAGE_HANDLER(P2PMsg_OnError, OnError)
     IPC_MESSAGE_HANDLER(P2PMsg_OnDataReceived, OnDataReceived)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -152,6 +153,13 @@ void P2PSocketDispatcher::OnIncomingTcpConnection(
   }
 }
 
+void P2PSocketDispatcher::OnSendComplete(int socket_id) {
+  P2PSocketClient* client = GetClient(socket_id);
+  if (client) {
+    client->OnSendComplete();
+  }
+}
+
 void P2PSocketDispatcher::OnError(int socket_id) {
   P2PSocketClient* client = GetClient(socket_id);
   if (client) {