[nacltoons] Rename core classes in accordance with doc.

nacltoons/src/ui_layer.h

Index: nacltoons/src/ui_layer.h
diff --git a/nacltoons/src/gameplay_scene.h b/nacltoons/src/ui_layer.h
similarity index 54%
rename from nacltoons/src/gameplay_scene.h
rename to nacltoons/src/ui_layer.h
index acd561e0593a36f73d49c596238bc153b9f9e2c0..fe78aa2948ae62ad2b9965dc35f21af7764e4c90 100644
--- a/nacltoons/src/gameplay_scene.h
+++ b/nacltoons/src/ui_layer.h
@@ -1,31 +1,14 @@
 // Copyright (c) 2013 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 GAMEPLAY_SCENE_H_
-#define GAMEPLAY_SCENE_H_
+#ifndef UI_LAYER_H_
+#define UI_LAYER_H_
 
 #include "cocos2d.h"
 
 USING_NS_CC;
 
 /**
- * Main gameplay scene containing the physics layer
- * that the user can interact with and a UI layer over
- * the top for menus.
- */
-class GameplayScene : public CCScene {
- public:
-  GameplayScene(int level_number) : level_number_(level_number) {}
-  ~GameplayScene() {}
-  static GameplayScene* create(int level_number);
-  virtual bool init();
-  void Restart();
-  void GameOver(bool success);
- private:
-  int level_number_;
-};
-
-/**
  * UI layer for displaying menu and information overlays on
  * top of the running game.
  */
@@ -44,4 +27,4 @@ class UILayer : public CCLayer {
   void Exit(CCObject* sender);
 };
 
-#endif  // GAMEPLAY_SCENE_H_
+#endif  // UI_LAYER_H_