Consolidate ShouldUseNativeFrame/AlwaysUseNativeFrame/UseNativeFrame spaghetti.

chrome/browser/ui/views/frame/browser_view.h

 // Copyright (c) 2011 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_VIEWS_FRAME_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 505 matching lines @@
   void ProcessFullscreen(bool fullscreen);
 
   // Copy the accelerator table from the app resources into something we can
   // use.
   void LoadAccelerators();
 
 #if defined(OS_WIN)
   // Builds the correct menu for when we have minimal chrome.
   void BuildSystemMenuForBrowserWindow();
   void BuildSystemMenuForAppOrPopupWindow();
+
+  // Adds optional debug items for frame type toggling.
+  void AddFrameToggleItems();
 #endif
 
   // Retrieves the command id for the specified Windows app command.
   int GetCommandIDForAppCommandID(int app_command_id) const;
 
   // Initialize the hung plugin detector.
   void InitHangMonitor();
 
   // Possibly records a user metrics action corresponding to the passed-in
   // accelerator.  Only implemented for Chrome OS, where we're interested in
@@ skipping 179 matching lines @@
 
   NotificationRegistrar registrar_;
 
   // Used to measure the loading spinner animation rate.
   base::TimeTicks last_animation_time_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_