Revert r42156, r42157, r42160. Allow dynamic switching in and out of sidetabs...

chrome/browser/browser_window.h

 // Copyright (c) 2010 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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_BROWSER_WINDOW_H_
 
 #include "chrome/browser/tab_contents/navigation_entry.h"
 #include "chrome/common/content_settings_types.h"
 #include "gfx/native_widget_types.h"
@@ skipping 292 matching lines @@
 #if defined(OS_CHROMEOS)
   // Toggles compact navigation bar.
   virtual void ToggleCompactNavigationBar() = 0;
 #endif
 
   // Clipboard commands applied to the whole browser window.
   virtual void Cut() = 0;
   virtual void Copy() = 0;
   virtual void Paste() = 0;
 
-  // Switches between available tabstrip display modes.
-  virtual void ToggleTabStripMode() = 0;
-
   // Construct a BrowserWindow implementation for the specified |browser|.
   static BrowserWindow* CreateBrowserWindow(Browser* browser);
 
   // Construct a FindBar implementation for the specified |browser|.
   static FindBar* CreateFindBar(Browser* browser_window);
 
  protected:
   friend class BrowserList;
   friend class BrowserView;
   virtual void DestroyBrowser() = 0;
@@ skipping 23 matching lines @@
 
   // Returns the TabContentsContainer.
   virtual views::View* GetTabContentsContainerView() const = 0;
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 };
 
 #endif  // CHROME_BROWSER_BROWSER_WINDOW_H_