PollConnection    178 chrome/browser/extensions/api/serial/serial_api.cc       serial_event_dispatcher_->PollConnection(extension_->id(), id);
PollConnection    316 chrome/browser/extensions/api/serial/serial_api.cc       serial_event_dispatcher_->PollConnection(extension_->id(),
PollConnection     27 chrome/browser/extensions/api/serial/serial_event_dispatcher.h   void PollConnection(const std::string& extension_id, int connection_id);