Attemp 2 at:

chrome/browser/tabs/tab_strip_model.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_TABS_TAB_STRIP_MODEL_H_
 #define CHROME_BROWSER_TABS_TAB_STRIP_MODEL_H_
 
 #include <vector>
 
 #include "base/observer_list.h"
@@ skipping 218 matching lines @@
   virtual void BookmarkAllTabs() = 0;
 
   // Returns true if any of the tabs can be closed.
   virtual bool CanCloseTab() const;
 
   // Returns true if the vertical tabstrip presentation should be used.
   virtual bool UseVerticalTabs() const = 0;
 
   // Toggles the use of the vertical tabstrip.
   virtual void ToggleUseVerticalTabs() = 0;
-
-  // Set the visiblity of the toolbar.
-  virtual void SetToolbarVisibility(bool value) = 0;
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // TabStripModel
 //
 //  A model & low level controller of a Browser Window tabstrip. Holds a vector
 //  of TabContents, and provides an API for adding, removing and shuffling
 //  them, as well as a higher level API for doing specific Browser-related
 //  tasks like adding new Tabs from just a URL, etc.
@@ skipping 292 matching lines @@
   bool IsTabPinned(int index) const;
 
   // Is the tab a mini-tab?
   // See description above class for details on this.
   bool IsMiniTab(int index) const;
 
   // Is the tab at |index| an app?
   // See description above class for details on app tabs.
   bool IsAppTab(int index) const;
 
-  // Returns true if the toolbar is visible for the tab at |index|.
-  bool IsToolbarVisible(int index) const;
-
   // Returns true if the tab is a phantom tab. A phantom tab is one where the
   // renderer has not been loaded.
   // See description above class for details on phantom tabs.
   bool IsPhantomTab(int index) const;
 
   // Returns true if the tab at |index| is blocked by a tab modal dialog.
   bool IsTabBlocked(int index) const;
 
   // Returns the index of the first tab that is not a mini-tab. This returns
   // |count()| if all of the tabs are mini-tabs, and 0 if none of the tabs are
@@ skipping 52 matching lines @@
   enum ContextMenuCommand {
     CommandFirst = 0,
     CommandNewTab,
     CommandReload,
     CommandDuplicate,
     CommandCloseTab,
     CommandCloseOtherTabs,
     CommandCloseTabsToRight,
     CommandRestoreTab,
     CommandTogglePinned,
-    CommandToggleToolbar,
     CommandBookmarkAllTabs,
     CommandUseVerticalTabs,
     CommandLast
   };
 
   // Returns true if the specified command is enabled.
   bool IsContextMenuCommandEnabled(int context_index,
                                    ContextMenuCommand command_id) const;
 
   // Returns true if the specified command is checked.
@@ skipping 172 matching lines @@
   typedef ObserverList<TabStripModelObserver> TabStripModelObservers;
   TabStripModelObservers observers_;
 
   // A scoped container for notification registries.
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStripModel);
 };
 
 #endif  // CHROME_BROWSER_TABS_TAB_STRIP_MODEL_H_