Implemented event-dispatching for button clicks.

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_
 
 #include <string>
 
 #include "base/bind.h"
@@ skipping 222 matching lines @@
   // Returns the window which shows us.
   virtual gfx::NativeWindow GetNativeWindow();
 
   void set_base_screen(BaseScreen* base_screen) { base_screen_ = base_screen; }
 
  private:
   // Returns full name of JS method based on screen and method
   // names.
   std::string FullMethodPath(const std::string& method) const;
 
+  // Handles user action.
+  void HandleUserAction(const std::string& action_id);
+
   // Handles situation when screen context is changed.
   void HandleContextChanged(const base::DictionaryValue* diff);
 
   // Keeps whether page is ready.
   bool page_is_ready_;
 
   BaseScreen* base_screen_;
 
   base::DictionaryValue* localized_values_;
 
   // Full name of the corresponding JS screen object. Can be empty, if
   // there are no corresponding screen object or several different
   // objects.
   std::string js_screen_path_prefix_;
 
   // The string id used in the async asset load in JS. If it is set to a
   // non empty value, the Initialize will be deferred until the underlying load
   // is finished.
   std::string async_assets_load_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BaseScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_