Simplify adding callbacks.

chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
index d9319943ec5bdaf9c8178dd2f244e89084ac69bf..fcd9c2fcbb33e547f938a0977b7ec572e4a3e48b 100644
--- a/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/reset_screen_handler.cc
@@ -95,12 +95,12 @@ void ResetScreenHandler::RegisterMessages() {
   AddCallback("resetOnReset", &ResetScreenHandler::HandleOnReset);
 }
 
-void ResetScreenHandler::HandleOnCancel(const base::ListValue* args) {
+void ResetScreenHandler::HandleOnCancel() {
   if (delegate_)
     delegate_->OnExit();
 }
 
-void ResetScreenHandler::HandleOnReset(const base::ListValue* args) {
+void ResetScreenHandler::HandleOnReset() {
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kFirstBoot)) {
     chromeos::DBusThreadManager::Get()->GetSessionManagerClient()->
         StartDeviceWipe();