Quota double-delete fix

BUG=142310


Review URL: https://chromiumcodereview.appspot.com/10832407

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152532 0039d316-1c4b-4281-b951-d872f2087c98
QuotaThreadTask::QuotaThreadTask(
    QuotaTaskObserver* observer,
    TaskRunner* target_task_runner)
    : QuotaTask(observer),
      target_task_runner_(target_task_runner) {
}

QuotaThreadTask::QuotaThreadTask(
    QuotaTaskObserver* observer,
    TaskRunner* target_task_runner)
    : QuotaTask(observer),
      target_task_runner_(target_task_runner) {
}
