cros: WIP patch to remove EnableDebuggingScreenView

chrome/browser/chromeos/login/screen_manager.h

 // Copyright (c) 2012 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_SCREEN_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_MANAGER_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
+#include "chrome/browser/chromeos/login/screens/core_oobe_view.h"
 
 namespace chromeos {
 
 class WizardController;
 
-// Class that manages creation and ownership of screens.
-class ScreenManager {
+// Manages the overall creation and ownership of screens. This is the
+// CoreOobeView::Delegate instance which gets passed to the WebUI specific login
+// code. When a callback method is invoked, this class just dispatches it to
+// all registered delegates.
+class ScreenManager : public CoreOobeView::Delegate {
  public:
   // |wizard_controller| is not owned by this class.
   explicit ScreenManager(WizardController* wizard_controller);
-  ~ScreenManager();
+  ~ScreenManager() override;
 
   // Getter for screen with lazy initialization.
   BaseScreen* GetScreen(OobeScreen screen);
 
   bool HasScreen(OobeScreen screen);
 
+  // Register a new delegate that will receive callbacks from UI-specific login
+  // code.
+  void AddDelegate(CoreOobeView::Delegate* delegate);
+
  private:
   FRIEND_TEST_ALL_PREFIXES(EnrollmentScreenTest, TestCancel);
   FRIEND_TEST_ALL_PREFIXES(WizardControllerFlowTest, Accelerators);
   friend class WizardControllerFlowTest;
   friend class WizardControllerOobeResumeTest;
   friend class WizardInProcessBrowserTest;
   friend class WizardControllerBrokenLocalStateTest;
 
+  // CoreOobeView::Delegate:
+  void OnEnableDebuggingScreenViewExit(bool success) override;
+  void OnViewDestroyed(CoreOobeView* view) override;
+
   // Created screens.
   std::map<OobeScreen, std::unique_ptr<BaseScreen>> screens_;
 
+  // Unowned pointer to BaseScreen instances which implement
+  // CoreOobeView::Delegate. The instances are owned by |screens_|.
+  std::vector<CoreOobeView::Delegate*> delegates_;
+
   // Used to allocate BaseScreen instances. Unowned.
   WizardController* wizard_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_MANAGER_H_