Simplify adding callbacks.

chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h
index cecf952d12d0b4538c5851302dde336038c8a179..766be258ac8e1af9a2f58b4a4fe5cbba4def9424 100644
--- a/chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h
@@ -14,7 +14,6 @@
 
 namespace base {
 class DictionaryValue;
-class ListValue;
 }
 
 namespace chromeos {
@@ -47,9 +46,9 @@ class EulaScreenHandler : public EulaScreenActor,
 
  private:
   // JS messages handlers.
-  void HandleOnExit(const base::ListValue* args);
-  void HandleOnLearnMore(const base::ListValue* args);
-  void HandleOnInstallationSettingsPopupOpened(const base::ListValue* args);
+  void HandleOnExit(bool accepted, bool usager_stats_enabled);
+  void HandleOnLearnMore();
+  void HandleOnInstallationSettingsPopupOpened();
 
   Delegate* delegate_;