Migrate call sites LoginDisplayHostImpl::default_host to LoginDisplayHost.

chrome/browser/chromeos/accessibility/accessibility_manager.cc

Index: chrome/browser/chromeos/accessibility/accessibility_manager.cc
diff --git a/chrome/browser/chromeos/accessibility/accessibility_manager.cc b/chrome/browser/chromeos/accessibility/accessibility_manager.cc
index 95d74b2a0a06f39456c057420d1daa1ff9be3ed0..93097caf320dc0a984ef6f6d6b5d5f425c7b151a 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_manager.cc
+++ b/chrome/browser/chromeos/accessibility/accessibility_manager.cc
@@ -37,7 +37,6 @@
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
-#include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
 #include "chrome/browser/chromeos/login/ui/webui_login_view.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/chromeos/ui/accessibility_focus_ring_controller.h"
@@ -637,7 +636,7 @@ void AccessibilityManager::LoadChromeVoxToUserScreen(
   content::WebUI* login_web_ui = NULL;
 
   if (ProfileHelper::IsSigninProfile(profile_)) {
-    LoginDisplayHost* login_display_host = LoginDisplayHostImpl::default_host();
+    LoginDisplayHost* login_display_host = LoginDisplayHost::default_host();
     if (login_display_host) {
       WebUILoginView* web_ui_login_view =
           login_display_host->GetWebUILoginView();