Add the "Other bookmarks" button on the right of the bookmark bar....

chrome/browser/cocoa/bookmark_bar_toolbar_view.h

 // 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.
 
 // The BookmarkBarToolbarView is responsible for drawing the background of the
 // BookmarkBar's toolbar in either of its two display modes - permanently
 // attached (slimline with a stroke at the bottom edge) or New Tab Page style
 // (padded with a round rect border and the New Tab Page theme behind).
 
 #ifndef CHROME_BROWSER_COCOA_BOOKMARK_BAR_TOOLBAR_VIEW_H_
@@ skipping 15 matching lines @@
 // size of the currently selected tab to properly calculate where the
 // background image is joined.
 - (int)currentTabContentsHeight;
 
 // Current theme provider, passed to the cross platform NtpBackgroundUtil class.
 - (ThemeProvider*)themeProvider;
 
 // Returns true if the bookmark bar should be drawn as if it's a disconnected
 // bookmark bar on the New Tag Page.
 - (BOOL)drawAsFloatingBar;
+
 @end
 
 @interface BookmarkBarToolbarView : BackgroundGradientView {
  @private
    // The controller which tells us how we should be drawing (as normal or as a
    // floating bar).
    IBOutlet id<BookmarkBarToolbarViewController> controller_;
-
-   // The bookmark bar's contents.
-   IBOutlet BookmarkBarView* buttonView_;
 }
-
-// Called by our controller to layout our subviews, so that on new tab pages,
-// we have a border.
-- (void)layoutViews;
-
 @end
 
 #endif  // CHROME_BROWSER_COCOA_BOOKMARK_BAR_TOOLBAR_VIEW_H_