Remove TabContents from TabStripModelObserver::TabDetachedAt.

BUG=107201
TEST=no visible change


Review URL: https://chromiumcodereview.appspot.com/11293205

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167122 0039d316-1c4b-4281-b951-d872f2087c98
GetAllNotificationsObserver::GetAllNotificationsObserver(
    AutomationProvider* automation,
    IPC::Message* reply_message)
    : automation_(automation->AsWeakPtr()),
      reply_message_(reply_message) {
  if (AreActiveNotificationProcessesReady()) {
    SendMessage();
  } else {
    registrar_.Add(this, chrome::NOTIFICATION_NOTIFY_BALLOON_CONNECTED,
                   content::NotificationService::AllSources());
  }
}

GetAllNotificationsObserver::GetAllNotificationsObserver(
    AutomationProvider* automation,
    IPC::Message* reply_message)
    : automation_(automation->AsWeakPtr()),
      reply_message_(reply_message) {
  if (AreActiveNotificationProcessesReady()) {
    SendMessage();
  } else {
    registrar_.Add(this, chrome::NOTIFICATION_NOTIFY_BALLOON_CONNECTED,
                   content::NotificationService::AllSources());
  }
}
