Add the ability to show a demo app on OOBE if a machine is derelict.

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

Index: chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
index 56cb8a2ba3716482e5f6bf07d7fb96b79d7ba134..8b8cf76e18ec1b462bf0c1971b28bb00e276a174 100644
--- a/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/network_screen_handler.h
@@ -8,14 +8,19 @@
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "base/time/time.h"
 #include "chrome/browser/chromeos/login/screens/network_screen_actor.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "ui/gfx/point.h"
 
+class PrefRegistrySimple;
+class PrefService;
+
 namespace chromeos {
 
 class CoreOobeActor;
+class IdleDetector;
 
 struct NetworkScreenHandlerOnLanguageChangedCallbackData;
 
@@ -46,6 +51,9 @@ class NetworkScreenHandler : public NetworkScreenActor,
   // WebUIMessageHandler implementation:
   virtual void RegisterMessages() OVERRIDE;
 
+  // Registers the preference for derelict state.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
  private:
   // Handles moving off the screen.
   void HandleOnExit();
@@ -69,6 +77,11 @@ class NetworkScreenHandler : public NetworkScreenActor,
   // Callback when the system timezone settings is changed.
   void OnSystemTimezoneChanged();
 
+  // Idle detection related methods.
+  void StartIdleDetection();
+  void OnIdle();
+  void SetupTimeouts();
+
   // Returns available languages. Caller gets the ownership. Note, it does
   // depend on the current locale.
   static base::ListValue* GetLanguageList();
@@ -85,6 +98,9 @@ class NetworkScreenHandler : public NetworkScreenActor,
 
   bool is_continue_enabled_;
 
+  // Flag set if we believe this is an abandoned machine.
+  bool is_derelict_;
+
   // Keeps whether screen should be shown right after initialization.
   bool show_on_init_;
 
@@ -93,6 +109,13 @@ class NetworkScreenHandler : public NetworkScreenActor,
 
   scoped_ptr<CrosSettings::ObserverSubscription> timezone_subscription_;
 
+  scoped_ptr<IdleDetector> detector_;
+
+  // Timeout to detect if the machine is in a derelict state.
+  base::TimeDelta derelict_detection_timeout_;
+  // Timeout before showing our demo up if the machine is in a derelict state.
+  base::TimeDelta derelict_idle_timeout_;
+
   base::WeakPtrFactory<NetworkScreenHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkScreenHandler);