Implement Instant on Mac

chrome/browser/cocoa/location_bar/location_bar_view_mac.h

 // Copyright (c) 2010 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_LOCATION_BAR_VIEW_MAC_H_
 #define CHROME_BROWSER_COCOA_LOCATION_BAR_VIEW_MAC_H_
 #pragma once
 
 #include <string>
 
@@ skipping 196 matching lines @@
 
   // Keyword hint decoration displayed on the right-hand side.
   scoped_ptr<KeywordHintDecoration> keyword_hint_decoration_;
 
   Profile* profile_;
 
   Browser* browser_;
 
   ToolbarModel* toolbar_model_;  // Weak, owned by Browser.
 
+  // Whether or not to update the instant preview.
+  bool update_instant_;
+
   // The transition type to use for the navigation.
   PageTransition::Type transition_;
 
   // Used to register for notifications received by NotificationObserver.
   NotificationRegistrar registrar_;
 
   // Used to schedule a task for the first run info bubble.
   ScopedRunnableMethodFactory<LocationBarViewMac> first_run_bubble_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarViewMac);
 };
 
 #endif  // CHROME_BROWSER_COCOA_LOCATION_BAR_VIEW_MAC_H_