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

chrome/browser/managed_mode/managed_user_service.cc

 // Copyright (c) 2013 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/managed_mode/managed_user_service.h"
 
 #include "base/memory/ref_counted.h"
 #include "base/prefs/pref_service.h"
 #include "base/sequenced_task_runner.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 260 matching lines @@
     }
     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
       const extensions::UnloadedExtensionInfo* extension_info =
           content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
       if (!extensions::ManagedModeInfo::GetContentPackSiteList(
               extension_info->extension).empty()) {
         UpdateSiteLists();
       }
       break;
     }
-    case chrome::NOTIFICATION_EXTENSION_INSTALLED:
+    case chrome::NOTIFICATION_EXTENSION_INSTALLED: {
+      // Remove the temporary elevation.
+      const extensions::Extension* extension =
+          content::Details<const extensions::InstalledExtensionInfo>(details)->
+              extension;
+      RemoveElevationForExtension(extension->id());
+      break;
+    }
     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {
-      // When an extension was installed or uninstalled, remove the temporary
-      // elevation.
+      // Remove the temporary elevation.
       const extensions::Extension* extension =
           content::Details<extensions::Extension>(details).ptr();
       RemoveElevationForExtension(extension->id());
       break;
     }
     default:
       NOTREACHED();
   }
 }
 
@@ skipping 202 matching lines @@
       profile_->GetPrefs()->GetDictionary(prefs::kManagedModeManualURLs);
   scoped_ptr<std::map<GURL, bool> > url_map(new std::map<GURL, bool>());
   for (DictionaryValue::Iterator it(*dict); !it.IsAtEnd(); it.Advance()) {
     bool allow = false;
     bool result = it.value().GetAsBoolean(&allow);
     DCHECK(result);
     (*url_map)[GURL(it.key())] = allow;
   }
   url_filter_context_.SetManualURLs(url_map.Pass());
 }