Modified the behavior of "Hide Toolbar in Full Screen"

chrome/browser/ui/cocoa/browser/exclusive_access_controller_views.h

 // Copyright 2016 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_COCOA_BROWSER_EXCLUSIVE_ACCESS_CONTROLLER_VIEWS_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_EXCLUSIVE_ACCESS_CONTROLLER_VIEWS_H_
 
 // Note this file has a _views suffix so that it may have an optional runtime
 // dependency on toolkit-views UI.
 
 #import <CoreGraphics/CoreGraphics.h>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
 #include "chrome/browser/ui/views/exclusive_access_bubble_views_context.h"
+#include "components/prefs/pref_change_registrar.h"
 #include "ui/base/accelerators/accelerator.h"
 
 class Browser;
 class BrowserWindow;
 @class BrowserWindowController;
 class ExclusiveAccessBubbleViews;
 @class ExclusiveAccessBubbleWindowController;
 class GURL;
 
 // Component placed into a browser window controller to manage communication
@@ skipping 20 matching lines @@
   void Destroy();
 
   // If showing, position the bubble at the given y-coordinate.
   void Layout(CGFloat max_y);
 
   // ExclusiveAccessContext:
   Profile* GetProfile() override;
   bool IsFullscreen() const override;
   bool SupportsFullscreenWithToolbar() const override;
   void UpdateFullscreenWithToolbar(bool with_toolbar) override;
-  void ToggleFullscreenToolbar() override;
+  void UpdateFullscreenToolbar() override;
   bool IsFullscreenWithToolbar() const override;
   void EnterFullscreen(const GURL& url,
                        ExclusiveAccessBubbleType type,
                        bool with_toolbar) override;
   void ExitFullscreen() override;
   void UpdateExclusiveAccessExitBubbleContent(
       const GURL& url,
       ExclusiveAccessBubbleType bubble_type) override;
   void OnExclusiveAccessUserInput() override;
   content::WebContents* GetActiveWebContents() override;
@@ skipping 22 matching lines @@
 
   // When going fullscreen for a tab, we need to store the URL and the
   // fullscreen type, since we can't show the bubble until
   // -windowDidEnterFullScreen: gets called.
   GURL url_;
   ExclusiveAccessBubbleType bubble_type_;
 
   scoped_ptr<ExclusiveAccessBubbleViews> views_bubble_;
   base::scoped_nsobject<ExclusiveAccessBubbleWindowController> cocoa_bubble_;
 
+  // Used to keep track of the kShowFullscreenToolbar preference.
+  PrefChangeRegistrar pref_registrar_;
+
   DISALLOW_COPY_AND_ASSIGN(ExclusiveAccessController);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_EXCLUSIVE_ACCESS_CONTROLLER_VIEWS_H_