Remove unused packaged app window controls code.

extensions/renderer/dispatcher_delegate.h

 // Copyright 2014 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 EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 17 matching lines @@
 
   // Includes additional native handlers in a ScriptContext's ModuleSystem.
   virtual void RegisterNativeHandlers(Dispatcher* dispatcher,
                                       ModuleSystem* module_system,
                                       ScriptContext* context) {}
 
   // Includes additional source resources into the resource map.
   virtual void PopulateSourceMap(ResourceBundleSourceMap* source_map) {}
 
   // Requires additional modules within an extension context's module system.
-  virtual void RequireAdditionalModules(ScriptContext* context,
-                                        bool is_within_platform_app) {}
+  virtual void RequireAdditionalModules(ScriptContext* context) {}
 
   // Allows the delegate to respond to an updated set of active extensions in
   // the Dispatcher.
   virtual void OnActiveExtensionsUpdated(
       const std::set<std::string>& extension_ids) {}
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_