ChromeOS MD-OOBE: Add HID detection screen.

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

Index: chrome/browser/ui/webui/chromeos/login/oobe_ui.h
diff --git a/chrome/browser/ui/webui/chromeos/login/oobe_ui.h b/chrome/browser/ui/webui/chromeos/login/oobe_ui.h
index ba9bebb5cff1e589eb028f1ccc770a07593079ee..c9a8977f30379a92ce0e36c6689e45aabfabdb15 100644
--- a/chrome/browser/ui/webui/chromeos/login/oobe_ui.h
+++ b/chrome/browser/ui/webui/chromeos/login/oobe_ui.h
@@ -159,6 +159,10 @@ class OobeUI : public content::WebUIController,
     return network_state_informer_.get();
   }
 
+  // Does ReloadContent() if needed (for example, if material design mode has
+  // changed).
+  void UpdateLocalizedStringsIfNeeded();
+
  private:
   void AddScreenHandler(std::unique_ptr<BaseScreenHandler> handler);
 
@@ -235,6 +239,10 @@ class OobeUI : public content::WebUIController,
   // calls.
   bool ready_ = false;
 
+  // This flag stores material-design mode (on/off) of currently displayed UI.
+  // If different version of UI is required, UI is updated.
+  bool oobe_ui_md_mode_ = false;
+
   // Callbacks to notify when JS part is fully loaded and ready to accept calls.
   std::vector<base::Closure> ready_callbacks_;