Enables storing shelf's auto_hide_behavior and alignment per display.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_browser.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_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_PER_BROWSER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_PER_BROWSER_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 232 matching lines @@
   virtual void LauncherItemChanged(int index,
                                    const ash::LauncherItem& old_item) OVERRIDE;
   virtual void LauncherStatusChanged() OVERRIDE;
 
   // Overridden from content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Overridden from ash::ShellObserver:
-  virtual void OnShelfAlignmentChanged() OVERRIDE;
+  virtual void OnShelfAlignmentChanged(aura::RootWindow* root_window) OVERRIDE;
 
   // Overridden from PrefServiceObserver:
   virtual void OnIsSyncingChanged() OVERRIDE;
 
   // Overridden from AppSyncUIStateObserver
   virtual void OnAppSyncUIStatusChanged() OVERRIDE;
 
  protected:
   // ChromeLauncherController overrides:
 
@@ skipping 82 matching lines @@
   content::NotificationRegistrar notification_registrar_;
 
   PrefChangeRegistrar pref_change_registrar_;
 
   AppSyncUIState* app_sync_ui_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherControllerPerBrowser);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_PER_BROWSER_H_