ChromeOS: Restrict material-design OOBE to compatible devices only.

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 fd9a28f208520d0dcb7450e73af150c3f87f8ce7..ffad9301718c6de49e16ac56fb1d29c9da8804ee 100644
--- a/chrome/browser/ui/webui/chromeos/login/oobe_ui.h
+++ b/chrome/browser/ui/webui/chromeos/login/oobe_ui.h
@@ -154,6 +154,9 @@ class OobeUI : public content::WebUIController,
     return network_state_informer_.get();
   }
 
+  // This call enables polymer-based UI.
+  void EnableMdOobe();
+
  private:
   void AddScreenHandler(BaseScreenHandler* handler);
 
@@ -238,6 +241,9 @@ class OobeUI : public content::WebUIController,
   // Observer of CrosSettings watching the kRebootOnShutdown policy.
   std::unique_ptr<ShutdownPolicyHandler> shutdown_policy_handler_;
 
+  // This controls displaying of polymer-based OOBE UI.
+  bool md_oobe_enabled_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(OobeUI);
 };