Made it possible to tell whether an extension is being installed or updated.

chrome/browser/chromeos/enterprise_extension_observer.cc

 // 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.
 
 #include "chrome/browser/chromeos/enterprise_extension_observer.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 16 matching lines @@
 
 void EnterpriseExtensionObserver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(type == chrome::NOTIFICATION_EXTENSION_INSTALLED);
   if (content::Source<Profile>(source).ptr() != profile_) {
     return;
   }
-  extensions::Extension* extension =
-      content::Details<extensions::Extension>(details).ptr();
+  const extensions::Extension* extension =
+      content::Details<const extensions::InstalledExtensionInfo>(details)->
+          extension;
   if (extension->location() !=
       extensions::Manifest::EXTERNAL_POLICY_DOWNLOAD) {
     return;
   }
   BrowserThread::PostTask(
       BrowserThread::FILE,
       FROM_HERE,
       base::Bind(
           &EnterpriseExtensionObserver::CheckExtensionAndNotifyEntd,
           extension->path()));
@@ skipping 12 matching lines @@
   }
 }
 
 // static
 void EnterpriseExtensionObserver::NotifyEntd() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DBusThreadManager::Get()->GetSessionManagerClient()->RestartEntd();
 }
 
 }  // namespace chromeos