Do not assign launch ordinals to ephemeral apps

chrome/browser/extensions/extension_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/extensions/extension_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 
@@ skipping 1827 matching lines @@
   // was not available.
   if (SharedModuleInfo::IsSharedModule(extension))
     MaybeFinishDelayedInstallations();
 }
 
 void ExtensionService::PromoteEphemeralApp(
     const extensions::Extension* extension, bool is_from_sync) {
   DCHECK(GetInstalledExtension(extension->id()) &&
          extension_prefs_->IsEphemeralApp(extension->id()));
 
+  // Remove the ephemeral flags from the preferences.
+  extension_prefs_->OnEphemeralAppPromoted(extension->id());
+
   if (!is_from_sync) {
     if (extension->RequiresSortOrdinal()) {
       // Reset the sort ordinals of the app to ensure it is added to the default
       // position, like newly installed apps would.
       extension_prefs_->app_sorting()->ClearOrdinals(extension->id());
       extension_prefs_->app_sorting()->EnsureValidOrdinals(
           extension->id(), syncer::StringOrdinal());
     }
   }
 
-  // Remove the ephemeral flags from the preferences.
-  extension_prefs_->OnEphemeralAppPromoted(extension->id());
-
   // Fire install-related events to allow observers to handle the promotion
   // of the ephemeral app.
   extensions::InstalledExtensionInfo details(
       extension,
       true /* is update */,
       true /* from ephemeral */,
       extension->name() /* old name */);
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
       content::Source<Profile>(profile_),
@@ skipping 504 matching lines @@
 }
 
 void ExtensionService::OnProfileDestructionStarted() {
   ExtensionIdSet ids_to_unload = registry_->enabled_extensions().GetIDs();
   for (ExtensionIdSet::iterator it = ids_to_unload.begin();
        it != ids_to_unload.end();
        ++it) {
     UnloadExtension(*it, UnloadedExtensionInfo::REASON_PROFILE_SHUTDOWN);
   }
 }