Load user custom wallpaper after browser crash.

chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc

Index: chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc
diff --git a/chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc b/chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc
index b098dc4e428e4383443a23529a876b2e98b4d0aa..bef27b45357b51e87d0368175233705a4a3249a4 100644
--- a/chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc
+++ b/chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc
@@ -27,8 +27,8 @@ class UserWallpaperDelegate: public ash::UserWallpaperDelegate {
   virtual ~UserWallpaperDelegate() {
   }
 
-  virtual const int GetUserWallpaperIndex() OVERRIDE {
-    return chromeos::UserManager::Get()->GetLoggedInUserWallpaperIndex();
+  virtual void SetLoggedInUserWallpaper() OVERRIDE {
+    chromeos::UserManager::Get()->SetLoggedInUserWallpaper();
   }
 
   virtual void OpenSetWallpaperPage() OVERRIDE {