Added UI to enable debugging features on CrOS

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

Index: chrome/browser/ui/webui/chromeos/login/enable_debugging_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/enable_debugging_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/enable_debugging_screen_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..6cae56626a69c4a748da7dbe2d8469fb92c4d8e4
--- /dev/null
+++ b/chrome/browser/ui/webui/chromeos/login/enable_debugging_screen_handler.h
@@ -0,0 +1,90 @@
+// 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_UI_WEBUI_CHROMEOS_LOGIN_ENABLE_DEBUGGING_SCREEN_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENABLE_DEBUGGING_SCREEN_HANDLER_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/chromeos/login/help_app_launcher.h"
+#include "chrome/browser/chromeos/login/screens/enable_debugging_screen_actor.h"
+#include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
+#include "content/public/browser/web_ui.h"

[xiyuan, 2014/10/30 03:52:09]

nit: seems not used?

[zel, 2014/10/31 01:22:26]

Done.

+
+class PrefRegistrySimple;
+
+namespace chromeos {
+
+// WebUI implementation of EnableDebuggingScreenActor.
+class EnableDebuggingScreenHandler : public EnableDebuggingScreenActor,
+                                     public BaseScreenHandler {
+ public:
+  EnableDebuggingScreenHandler();
+  virtual ~EnableDebuggingScreenHandler();
+
+  // EnableDebuggingScreenActor implementation:
+  virtual void PrepareToShow() override;
+  virtual void Show() override;
+  virtual void Hide() override;
+  virtual void SetDelegate(Delegate* delegate) override;
+
+  // BaseScreenHandler implementation:
+  virtual void DeclareLocalizedValues(LocalizedValuesBuilder* builder) override;
+  virtual void Initialize() override;
+
+  // WebUIMessageHandler implementation:
+  virtual void RegisterMessages() override;
+
+  void OnRollbackCheck(bool can_rollback);
+
+  // Registers Local State preferences.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
+ private:
+  enum UIState {
+    UI_STATE_ERROR = -1,
+    UI_STATE_REMOVE_PROTECTION = 1,
+    UI_STATE_SETUP = 2,
+    UI_STATE_WAIT = 3,
+    UI_STATE_DONE = 4,
+  };
+
+  // JS messages handlers.
+  void HandleOnCancel();
+  void HandleOnDone();
+  void HandleOnLearnMore();
+  void HandleOnRemoveRootFSProtection();
+  void HandleOnSetup(const std::string& password);
+
+  void ChooseAndApplyShowScenario();
+  void ShowWithParams();
+  void EnableChromeDevFeatures(const std::string& password);
+
+  // Callback for DebugDaemonClient::EnableDebuggingFeatures().
+  void OnEnableDebuggingFeatures(bool success);
+
+  // Callback for DebugDaemonClient::RemoveRootfsVerification().
+  void OnRemoveRootfsVerification(bool success);
+
+  // Updates UI state.
+  void UpdateUIState(UIState state);
+
+  Delegate* delegate_;
+
+  // Help application used for help dialogs.
+  scoped_refptr<HelpAppLauncher> help_app_;
+
+  // Keeps whether screen should be shown right after initialization.
+  bool show_on_init_;
+  bool ready_for_setup_;
+
+  base::WeakPtrFactory<EnableDebuggingScreenHandler> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(EnableDebuggingScreenHandler);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENABLE_DEBUGGING_SCREEN_HANDLER_H_