Fixed uninitialized use in ExtensionService, introduced in http://crrev.com/134251

[email protected]
BUG=124163
TEST=Valgrind bots are happy

Review URL: https://chromiumcodereview.appspot.com/10254003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134255 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 7a4adf29..e2db5c5 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -395,6 +395,7 @@
       app_notification_manager_(new AppNotificationManager(profile)),
       apps_promo_(profile->GetPrefs()),
       event_routers_initialized_(false),
+      update_once_all_providers_are_ready_(false),
       app_sync_bundle_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
       extension_sync_bundle_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
       extension_warnings_(profile),