Animate showing / hiding the location bar for bookmark apps.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.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_COCOA_LOCATION_BAR_LOCATION_BAR_VIEW_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_LOCATION_BAR_VIEW_MAC_H_
 
 #include <string>
 
 #import <Cocoa/Cocoa.h>
@@ skipping 49 matching lines @@
   GURL GetDestinationURL() const override;
   WindowOpenDisposition GetWindowOpenDisposition() const override;
   ui::PageTransition GetPageTransition() const override;
   void AcceptInput() override;
   void FocusLocation(bool select_all) override;
   void FocusSearch() override;
   void UpdateContentSettingsIcons() override;
   void UpdateManagePasswordsIconAndBubble() override;
   void UpdatePageActions() override;
   void UpdateBookmarkStarVisibility() override;
+  void UpdateLocationBarVisibility(bool visible, bool animate) override;
   bool ShowPageActionPopup(const extensions::Extension* extension,
                            bool grant_active_tab) override;
   void UpdateOpenPDFInReaderPrompt() override;
   void UpdateGeneratedCreditCardView() override;
   void SaveStateToContents(content::WebContents* contents) override;
   void Revert() override;
   const OmniboxView* GetOmniboxView() const override;
   OmniboxView* GetOmniboxView() override;
   LocationBarTesting* GetLocationBarForTesting() override;
 
@@ skipping 191 matching lines @@
   // Used to change the visibility of the star decoration.
   BooleanPrefMember edit_bookmarks_enabled_;
 
   // Used to schedule a task for the first run info bubble.
   base::WeakPtrFactory<LocationBarViewMac> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_LOCATION_BAR_VIEW_MAC_H_