Add brightness/grayscale animations and use them for OOBE boot transition

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 ed4cc7b35ad7ff6a50c2207f9d393a831bf164e9..711f193e44abfbe240d20dc84feb6b7a68d2a2a1 100644
--- a/chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc
+++ b/chrome/browser/chromeos/background/ash_user_wallpaper_delegate.cc
@@ -7,9 +7,11 @@
 #include "ash/shell.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_resources.h"
+#include "ash/wm/window_animations.h"
 #include "base/logging.h"
 #include "chrome/browser/chromeos/extensions/wallpaper_manager_api.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
+#include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
@@ -29,6 +31,15 @@ class UserWallpaperDelegate: public ash::UserWallpaperDelegate {
   virtual ~UserWallpaperDelegate() {
   }
 
+  virtual ash::WindowVisibilityAnimationType GetAnimationType() OVERRIDE {
+    bool is_registered = WizardController::IsDeviceRegistered();
+    // TODO(nkostylev): Figure out whether this would affect autotests as well.
+    if (is_registered)
+      return ash::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE;
+    else
+      return ash::WINDOW_VISIBILITY_ANIMATION_TYPE_BRIGHTNESS_GRAYSCALE;
+  }
+
   virtual void InitializeWallpaper() OVERRIDE {
     chromeos::UserManager::Get()->InitializeWallpaper();
   }