Download and cache kiosk app extension when it is added via kiosk mamangement ui.

chrome/browser/chromeos/app_mode/kiosk_app_manager.h

Index: chrome/browser/chromeos/app_mode/kiosk_app_manager.h
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_manager.h b/chrome/browser/chromeos/app_mode/kiosk_app_manager.h
index 7c1231504a1c95a8a99eafacc382390b14ffc68b..34d21392074fe92457b238c59f92013a95a49aa0 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_app_manager.h
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_manager.h
@@ -15,6 +15,7 @@
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_data_delegate.h"
+#include "chrome/browser/chromeos/extensions/external_cache.h"
 #include "chrome/browser/chromeos/policy/enterprise_install_attributes.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "ui/gfx/image/image_skia.h"
@@ -36,7 +37,8 @@ class KioskAppData;
 class KioskAppManagerObserver;
 
 // KioskAppManager manages cached app data.
-class KioskAppManager : public KioskAppDataDelegate {
+class KioskAppManager : public KioskAppDataDelegate,
+                        public ExternalCache::Delegate {
  public:
   enum ConsumerKioskAutoLaunchStatus {
     // Consumer kiosk mode auto-launch feature can be enabled on this machine.
@@ -160,6 +162,12 @@ class KioskAppManager : public KioskAppDataDelegate {
     AUTOLOGIN_APPROVED  = 2,
     AUTOLOGIN_REJECTED  = 3,
   };
+  enum KioskAppCrxCacheStatus {

[xiyuan, 2014/05/02 03:22:12]

Seems not used.

[jennyz, 2014/05/02 17:46:55]

woops, forgot to remove. Removed.

+    KIOSK_APP_CACHE_INIT,
+    KIOSK_APP_CACHE_LOADING,
+    KIOSK_APP_CACHE_INSTALLED,
+    KIOSK_APP_CACHE_ERROR,
+  };
 
   KioskAppManager();
   virtual ~KioskAppManager();
@@ -179,6 +187,14 @@ class KioskAppManager : public KioskAppDataDelegate {
   virtual void OnKioskAppDataChanged(const std::string& app_id) OVERRIDE;
   virtual void OnKioskAppDataLoadFailure(const std::string& app_id) OVERRIDE;
 
+  // ExternalCache::Delegate:
+  virtual void OnExtensionListsUpdated(
+      const base::DictionaryValue* prefs) OVERRIDE;
+  virtual void OnExtensionLoadedInCache(const std::string& id) OVERRIDE;
+  virtual void OnExtensionDownloadFailed(
+      const std::string& id,
+      extensions::ExtensionDownloaderDelegate::Error error) OVERRIDE;
+
   // Callback for EnterpriseInstallAttributes::LockDevice() during
   // EnableConsumerModeKiosk() call.
   void OnLockDevice(
@@ -210,6 +226,9 @@ class KioskAppManager : public KioskAppDataDelegate {
   scoped_ptr<CrosSettings::ObserverSubscription>
       local_account_auto_login_id_subscription_;
 
+  base::FilePath cache_dir_;
+  scoped_ptr<ExternalCache> external_cache_;
+
   DISALLOW_COPY_AND_ASSIGN(KioskAppManager);
 };