Add a private PPB_Talk_Private interface.

content/ppapi_plugin/ppapi_thread.cc

Index: content/ppapi_plugin/ppapi_thread.cc
diff --git a/content/ppapi_plugin/ppapi_thread.cc b/content/ppapi_plugin/ppapi_thread.cc
index 5b5c2cf37e0f99db7a39ed1a1e36db42706897c1..8d2d23e5a51689a5261964cdcc79746d13962316 100644
--- a/content/ppapi_plugin/ppapi_thread.cc
+++ b/content/ppapi_plugin/ppapi_thread.cc
@@ -101,6 +101,8 @@ bool PpapiThread::OnMessageReceived(const IPC::Message& msg) {
                                 OnPluginDispatcherMessageReceived(msg))
     IPC_MESSAGE_HANDLER_GENERIC(PpapiMsg_PPBUDPSocket_BindACK,
                                 OnPluginDispatcherMessageReceived(msg))
+    IPC_MESSAGE_HANDLER_GENERIC(PpapiMsg_PPBTalk_GetPermissionACK,
+                                OnPluginDispatcherMessageReceived(msg))
     IPC_MESSAGE_HANDLER_GENERIC(PpapiMsg_PPBHostResolver_ResolveACK,
                                 OnPluginDispatcherMessageReceived(msg))
     IPC_MESSAGE_HANDLER(PpapiMsg_SetNetworkState, OnMsgSetNetworkState)