Update cached kiosk app crx from usb stick.

chrome/browser/chromeos/extensions/external_cache.cc

Index: chrome/browser/chromeos/extensions/external_cache.cc
diff --git a/chrome/browser/chromeos/extensions/external_cache.cc b/chrome/browser/chromeos/extensions/external_cache.cc
index bd3c0413e4b2b203615fe0bcca9fe2707b13f0b1..4ec9fb5c336cd7adafa3e8e7a6ee597914eaa6bf 100644
--- a/chrome/browser/chromeos/extensions/external_cache.cc
+++ b/chrome/browser/chromeos/extensions/external_cache.cc
@@ -126,6 +126,20 @@ bool ExternalCache::GetExtension(const std::string& id,
   return local_cache_.GetExtension(id, file_path, version);
 }
 
+void ExternalCache::PutExternalExtension(
+    const std::string& id,
+    const base::FilePath& crx_file_path,
+    const std::string& version,
+    const PutExternalExtensionCallback& callback) {
+  local_cache_.PutExtension(id,
+                            crx_file_path,
+                            version,
+                            base::Bind(&ExternalCache::OnPutExternalExtension,
+                                       weak_ptr_factory_.GetWeakPtr(),
+                                       id,
+                                       callback));
+}
+
 void ExternalCache::Observe(int type,
                             const content::NotificationSource& source,
                             const content::NotificationDetails& details) {
@@ -321,6 +335,16 @@ void ExternalCache::OnPutExtension(const std::string& id,
   UpdateExtensionLoader();
 }
 
+void ExternalCache::OnPutExternalExtension(
+    const std::string& id,
+    const PutExternalExtensionCallback& callback,
+    const base::FilePath& file_path,
+    bool file_ownership_passed) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  OnPutExtension(id, file_path, file_ownership_passed);
+  callback.Run(id, !file_ownership_passed);
+}
+
 std::string ExternalCache::Delegate::GetInstalledExtensionVersion(
     const std::string& id) {
   return std::string();