Mac bookmark work. ...

chrome/browser/cocoa/bookmark_bar_state_controller.h

Index: chrome/browser/cocoa/bookmark_bar_state_controller.h
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--- chrome/browser/cocoa/bookmark_bar_state_controller.h	(revision 0)
+++ chrome/browser/cocoa/bookmark_bar_state_controller.h	(revision 0)
@@ -0,0 +1,36 @@
+// Copyright (c) 2009 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_COCOA_BOOKMARK_BAR_STATE_CONTROLLER_H_
+#define CHROME_BROWSER_COCOA_BOOKMARK_BAR_STATE_CONTROLLER_H_
+
+#import <Cocoa/Cocoa.h>
+
+class Browser;
+
+// A class to manage bookmark bar state (visible or not).  State is
+// shared among all tabs and saved in a preference.
+@interface BookmarkBarStateController : NSObject {
+ @private
+  Browser* browser_;
+  BOOL visible_;
+}
+
+- (id)initWithBrowser:(Browser *)browser;
+
+// Return YES or NO reflecting visibility state of the bookmark bar.
+- (BOOL)visible;
+
+// Toggle (on or off) the bookmark bar visibility.
+- (void)toggleBookmarkBar;
+
+@end  // BookmarkBarStateController
+
+
+@interface BookmarkBarStateController (Private)
+// Internal method exposed for unit test convenience.
+- (void)togglePreference;
+@end
+
+#endif  // CHROME_BROWSER_COCOA_BOOKMARK_BAR_STATE_CONTROLLER_H_