cros: Cleanup lock screen and OOBE C++ backing code.

chrome/browser/chromeos/accessibility/accessibility_extension_loader.cc

Index: chrome/browser/chromeos/accessibility/accessibility_extension_loader.cc
diff --git a/chrome/browser/chromeos/accessibility/accessibility_extension_loader.cc b/chrome/browser/chromeos/accessibility/accessibility_extension_loader.cc
index 5c6ad481c345635bf3894e9fbe24fa0c94e50785..5f11a6d7823c9223733af6562f64afc2f0d5cf10 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_extension_loader.cc
+++ b/chrome/browser/chromeos/accessibility/accessibility_extension_loader.cc
@@ -8,6 +8,7 @@
 #include "base/callback_helpers.h"
 #include "base/path_service.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
+#include "chrome/browser/chromeos/login/lock/webui_screen_locker.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/login/ui/webui_login_view.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
@@ -216,7 +217,7 @@ void AccessibilityExtensionLoader::LoadToLockScreen(
 
   ScreenLocker* screen_locker = ScreenLocker::default_screen_locker();
   if (screen_locker && screen_locker->locked()) {
-    content::WebUI* lock_web_ui = screen_locker->GetAssociatedWebUI();
+    content::WebUI* lock_web_ui = screen_locker->web_ui()->GetWebUI();
     if (lock_web_ui) {
       Profile* profile = Profile::FromWebUI(lock_web_ui);
       loaded_on_lock_screen_ = true;