Added UI to enable debugging features on CrOS

chrome/browser/chromeos/login/screens/enable_debugging_screen.cc

+// 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.
+
+#include "chrome/browser/chromeos/login/screens/enable_debugging_screen.h"
+
+#include "base/logging.h"
+#include "chrome/browser/chromeos/login/screens/screen_observer.h"
+#include "chrome/browser/chromeos/login/wizard_controller.h"
+
+namespace chromeos {
+
+EnableDebuggingScreen::EnableDebuggingScreen(ScreenObserver* observer,
+                                             EnableDebuggingScreenActor* actor)
+    : BaseScreen(observer), actor_(actor) {
+  DCHECK(actor_);
+  if (actor_)
+    actor_->SetDelegate(this);
+}
+
+EnableDebuggingScreen::~EnableDebuggingScreen() {
+  if (actor_)
+    actor_->SetDelegate(NULL);
+}
+
+void EnableDebuggingScreen::PrepareToShow() {
+  if (actor_)
+    actor_->PrepareToShow();
+}
+
+void EnableDebuggingScreen::Show() {
+  if (actor_)
+    actor_->Show();
+}
+
+void EnableDebuggingScreen::Hide() {
+  if (actor_)
+    actor_->Hide();
+}
+
+std::string EnableDebuggingScreen::GetName() const {
+  return WizardController::kEnableDebuggingScreenName;
+}
+
+void EnableDebuggingScreen::OnExit(bool success) {
+  get_screen_observer()->OnExit(
+      success ? ScreenObserver::ENABLE_DEBUGGING_FINISHED :
+                ScreenObserver::ENABLE_DEBUGGING_CANCELED);
+}
+
+void EnableDebuggingScreen::OnActorDestroyed(
+    EnableDebuggingScreenActor* actor) {
+  if (actor_ == actor)
+    actor_ = NULL;
+}
+
+}  // namespace chromeos