mash: Fix shelf window property use in Chrome.

chrome/browser/ui/ash/launcher/browser_status_monitor.h

Index: chrome/browser/ui/ash/launcher/browser_status_monitor.h
diff --git a/chrome/browser/ui/ash/launcher/browser_status_monitor.h b/chrome/browser/ui/ash/launcher/browser_status_monitor.h
index 7fd0f4592ba4393a39c63f999cafb65733768140..c231bd78f1471d4e2c33d07fc7e1584e5e625fbe 100644
--- a/chrome/browser/ui/ash/launcher/browser_status_monitor.h
+++ b/chrome/browser/ui/ash/launcher/browser_status_monitor.h
@@ -98,7 +98,6 @@ class BrowserStatusMonitor : public aura::client::ActivationChangeObserver,
 
  private:
   class LocalWebContentsObserver;
-  class SettingsWindowObserver;
 
   // Create LocalWebContentsObserver for |contents|.
   void AddWebContentsObserver(content::WebContents* contents);
@@ -118,7 +117,6 @@ class BrowserStatusMonitor : public aura::client::ActivationChangeObserver,
   std::map<Browser*, std::string> browser_to_app_id_map_;
   std::map<content::WebContents*, std::unique_ptr<LocalWebContentsObserver>>
       webcontents_to_observer_map_;
-  std::unique_ptr<SettingsWindowObserver> settings_window_observer_;
 
   BrowserTabStripTracker browser_tab_strip_tracker_;