Fixed behavior of the bookmark bar visibility.

chrome/browser/bookmarks/bookmark_model.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_BOOKMARKS_BOOKMARK_MODEL_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_H_
 #pragma once
 
 #include <set>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/string16.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/bookmarks/bookmark_service.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/browser/history/history.h"
+#include "chrome/browser/prefs/pref_change_registrar.h"
 #include "content/browser/cancelable_request.h"
 #include "content/common/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/models/tree_node_model.h"
 
 class BookmarkExpandedStateTracker;
 class BookmarkIndex;
 class BookmarkLoadDetails;
 class BookmarkModel;
@@ skipping 379 matching lines @@
 
   // Records that the bookmarks file was changed externally.
   void SetFileChanged();
 
   // Creates and returns a new BookmarkLoadDetails. It's up to the caller to
   // delete the returned object.
   BookmarkLoadDetails* CreateLoadDetails();
 
   NotificationRegistrar registrar_;
 
+  // Listens for changes to the kShowBookmarkBar preference.
+  PrefChangeRegistrar pref_change_registrar_;
+
   Profile* profile_;
 
   // Whether the initial set of data has been loaded.
   bool loaded_;
 
   // Whether the bookmarks file was changed externally. This is set after
   // loading is complete and once set the value never changes.
   bool file_changed_;
 
   // The root node. This contains the bookmark bar node and the 'other' node as
@@ skipping 27 matching lines @@
   scoped_ptr<BookmarkIndex> index_;
 
   base::WaitableEvent loaded_signal_;
 
   scoped_ptr<BookmarkExpandedStateTracker> expanded_state_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkModel);
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_H_