Install and launch kiosk app from cached crx file at start up.

chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h

Index: chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h
diff --git a/chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h b/chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h
index 608f04c79ef3d8e311be57a8844ccdf72d55cc9b..2937634b1fe3215a0362b63eadded3cbd702366d 100644
--- a/chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h
+++ b/chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.h
@@ -37,9 +37,14 @@ class KioskAppsHandler : public content::WebUIMessageHandler,
   // content::WebUIMessageHandler overrides:
   virtual void RegisterMessages() OVERRIDE;
 
-  // KioskAppPrefsObserver overrides:
+  // KioskAppManagerObserver overrides:
   virtual void OnKioskAppDataChanged(const std::string& app_id) OVERRIDE;
   virtual void OnKioskAppDataLoadFailure(const std::string& app_id) OVERRIDE;
+  virtual void OnKioskExtensionLoadedInCache(
+      const std::string& app_id) OVERRIDE;
+  virtual void OnKioskExtensionDownloadFailed(
+      const std::string& app_id) OVERRIDE;
+
   virtual void OnKioskAppsSettingsChanged() OVERRIDE;
 
  private:
@@ -55,6 +60,9 @@ class KioskAppsHandler : public content::WebUIMessageHandler,
   void HandleDisableKioskAutoLaunch(const base::ListValue* args);
   void HandleSetDisableBailoutShortcut(const base::ListValue* args);
 
+  void HandleKioskDataChange(const std::string& app_id);
+  void HandleKioskDataFailure(const std::string& app_id);

[xiyuan, 2014/07/15 02:32:51]

nit: Handlexxx sounds like a JS callback. Let's use different names,
e.g.
HandleKioskDataChange -> UpdateApp
HandleKioskDataFailure -> ShowError

[jennyz, 2014/07/15 16:36:41]

Done.

+
   // Callback for KioskAppManager::GetConsumerKioskModeStatus().
   void OnGetConsumerKioskAutoLaunchStatus(
       chromeos::KioskAppManager::ConsumerKioskAutoLaunchStatus status);