Network connectivity errors handling (incl. CP) for enrollment flow

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_
 
 #include <map>
 #include <string>
 
@@ skipping 26 matching lines @@
 
 // View used to render a WebUI supporting Widget. This widget is used for the
 // WebUI based start up and lock screens. It contains a WebView.
 class WebUILoginView : public views::View,
                        public content::WebContentsDelegate,
                        public content::WebContentsObserver,
                        public content::NotificationObserver,
                        public ChromeWebModalDialogManagerDelegate,
                        public web_modal::WebContentsModalDialogHost {
  public:
+  class FrameObserver {
+   public:
+    // Called when a frame failed to load.
+    virtual void OnFrameError(const std::string& frame_unique_name) = 0;
+  };
+
   // Internal class name.
   static const char kViewClassName[];
 
   WebUILoginView();
   virtual ~WebUILoginView();
 
   // Initializes the webui login view.
   virtual void Init();
 
   // Overridden from views::View:
@@ skipping 41 matching lines @@
 
   void set_is_hidden(bool hidden) { is_hidden_ = hidden; }
 
   bool webui_visible() const { return webui_visible_; }
 
   // Let suppress emission of this signal.
   void set_should_emit_login_prompt_visible(bool emit) {
     should_emit_login_prompt_visible_ = emit;
   }
 
+  void AddFrameObserver(FrameObserver* frame_observer);
+  void RemoveFrameObserver(FrameObserver* frame_observer);
+
  protected:
   // Overridden from views::View:
   virtual void Layout() OVERRIDE;
   virtual void OnLocaleChanged() OVERRIDE;
   virtual void ChildPreferredSizeChanged(View* child) OVERRIDE;
   virtual void AboutToRequestFocusFromTabTraversal(bool reverse) OVERRIDE;
 
   // Overridden from content::NotificationObserver.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ skipping 58 matching lines @@
   // Should we emit the login-prompt-visible signal when the login page is
   // displayed?
   bool should_emit_login_prompt_visible_;
 
   // True to forward keyboard event.
   bool forward_keyboard_event_;
 
   scoped_ptr<ScopedGaiaAuthExtension> auth_extension_;
 
   ObserverList<web_modal::ModalDialogHostObserver> observer_list_;
+  ObserverList<FrameObserver> frame_observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_