Restore to user selected wallpaper after browser crash

chrome/browser/chromeos/background/desktop_background_observer.h

Index: chrome/browser/chromeos/background/desktop_background_observer.h
diff --git a/chrome/browser/chromeos/background/desktop_background_observer.h b/chrome/browser/chromeos/background/desktop_background_observer.h
index 2fcca77203b3fc6774aa7dfff4678c703e1a94a1..0efe9d5aac6334cd3799b13fc2a23f1a217a616c 100644
--- a/chrome/browser/chromeos/background/desktop_background_observer.h
+++ b/chrome/browser/chromeos/background/desktop_background_observer.h
@@ -9,18 +9,22 @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
+namespace ash {
+class UserWallpaperDelegate;
+}
+
 namespace chromeos {
 
+ash::UserWallpaperDelegate* CreateUserWallpaperDelegate();
+
 // Listens for background change events and passes them to the Aura shell's
 // DesktopBackgroundController class.
-class DesktopBackgroundObserver : public content::NotificationObserver{
+class DesktopBackgroundObserver : public content::NotificationObserver {
  public:
   DesktopBackgroundObserver();
   virtual ~DesktopBackgroundObserver();
 
  private:
-  // Returns the index of user selected wallpaper from a default wallpaper list.
-  int GetUserWallpaperIndex();
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,