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

chrome/browser/ui/webui/chromeos/login/base_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/base_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/base_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/base_screen_handler.h
index 613aa00e1e097a81711f14f037029f7aee5effb5..87564b696eba4aa078cd205073224b75afe1a300 100644
--- a/chrome/browser/ui/webui/chromeos/login/base_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/base_screen_handler.h
@@ -31,6 +31,7 @@ class LocalizedValuesBuilder;
 namespace chromeos {
 
 class BaseScreen;
+class OobeUI;
 
 // Base class for the OOBE/Login WebUI handlers.
 class BaseScreenHandler : public content::WebUIMessageHandler,
@@ -152,6 +153,9 @@ class BaseScreenHandler : public content::WebUIMessageHandler,
   // parameter.
   void ShowScreenWithData(OobeScreen screen, const base::DictionaryValue* data);
 
+  // Returns the OobeUI instance.
+  OobeUI* GetOobeUI() const;
+
   // Returns current visible OOBE screen.
   OobeScreen GetCurrentScreen() const;