Implement a Menu Item to Hide the Toolbar in Fullscreen

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

 // Copyright (c) 2012 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_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 268 matching lines @@
                        bool with_toolbar) override;
   void ExitFullscreen() override;
   void UpdateExclusiveAccessExitBubbleContent(
       const GURL& url,
       ExclusiveAccessBubbleType bubble_type) override;
   bool ShouldHideUIForFullscreen() const override;
   bool IsFullscreen() const override;
   bool IsFullscreenBubbleVisible() const override;
   bool SupportsFullscreenWithToolbar() const override;
   void UpdateFullscreenWithToolbar(bool with_toolbar) override;
+  void ToggleFullscreenToolbar() override;
   bool IsFullscreenWithToolbar() const override;
+  bool ShouldHideFullscreenToolbar() const override;
 #if defined(OS_WIN)
   void SetMetroSnapMode(bool enable) override;
   bool IsInMetroSnapMode() const override;
 #endif  // defined(OS_WIN)
   LocationBar* GetLocationBar() const override;
   void SetFocusToLocationBar(bool select_all) override;
   void UpdateReloadStopState(bool is_loading, bool force) override;
   void UpdateToolbar(content::WebContents* contents) override;
   void ResetToolbarTabState(content::WebContents* contents) override;
   void FocusToolbar() override;
@@ skipping 403 matching lines @@
   scoped_ptr<ImmersiveModeController> immersive_mode_controller_;
 
   scoped_ptr<WebContentsCloseHandler> web_contents_close_handler_;
 
   mutable base::WeakPtrFactory<BrowserView> activate_modal_dialog_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_