cros: Move KeyboardDrivenOobeHandler into login_display_host_impl.cc.

chrome/browser/chromeos/login/ui/login_display_host_impl.h

Index: chrome/browser/chromeos/login/ui/login_display_host_impl.h
diff --git a/chrome/browser/chromeos/login/ui/login_display_host_impl.h b/chrome/browser/chromeos/login/ui/login_display_host_impl.h
index c18eef9497bcd31cdbf8863e4ad32f6c2800459f..d7041afa8bac9a7db18eafd55ab737fcd56c52b8 100644
--- a/chrome/browser/chromeos/login/ui/login_display_host_impl.h
+++ b/chrome/browser/chromeos/login/ui/login_display_host_impl.h
@@ -42,7 +42,6 @@ namespace chromeos {
 class ArcKioskController;
 class DemoAppLauncher;
 class FocusRingController;
-class KeyboardDrivenOobeKeyHandler;
 class WebUILoginDisplay;
 class WebUILoginView;
 
@@ -106,6 +105,8 @@ class LoginDisplayHostImpl : public LoginDisplayHost,
   static void DisableRestrictiveProxyCheckForTest();
 
  protected:
+  class KeyboardDrivenOobeKeyHandler;
+
   // content::NotificationObserver implementation:
   void Observe(int type,
                const content::NotificationSource& source,