[nacltoons] Rename core classes in accordance with doc.

nacltoons/src/app_delegate.cc

 // 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.
 #include "app_delegate.h"
 
 #include "CCLuaEngine.h"
 #include "frontend.h"
 #include "LuaBox2D.h"
 #include "LuaCocos2dExtensions.h"
-#include "lua_physics_layer.h"
+#include "lua_level_layer.h"
 
 
 USING_NS_CC;
 
 bool AppDelegate::applicationDidFinishLaunching() {
   CCEGLView* view = CCEGLView::sharedOpenGLView();
 
   CCDirector* director = CCDirector::sharedDirector();
   director->setOpenGLView(view);
 
@@ skipping 12 matching lines @@
     return false;
 
   CCScriptEngineManager::sharedManager()->setScriptEngine(engine);
 
   // Add custom lua bindings on top of what cocos2dx provides
   CCLuaStack* stack = engine->getLuaStack();
   lua_State* lua_state = stack->getLuaState();
   assert(lua_state);
   // add box2D bindings
   tolua_LuaBox2D_open(lua_state);
-  // add PhysicsLayer bindings
-  tolua_physics_layer_open(lua_state);
+  // add LevelLayer bindings
+  tolua_level_layer_open(lua_state);
   // add cocos2dx extensions bindings
   tolua_extensions_open(lua_state);
 
   CCFileUtils* utils = CCFileUtils::sharedFileUtils();
   std::string path = utils->fullPathForFilename("loader.lua");
 
   // add the location of the lua file to the search path
   engine->addSearchPath(path.substr(0, path.find_last_of("/")).c_str());
 
   // execute loader file
   int rtn = engine->executeScriptFile(path.c_str());
   assert(!rtn);
   if (rtn)
     return false;
 
   // Create the initial (autorelease) scene and run with it.
   CCScene* scene = FrontEndScene::create();
   director->runWithScene(scene);
   return true;
 }