Apply missing kParentDirectory check

BUG=161564

Review URL: https://chromiumcodereview.appspot.com/11414046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@168692 0039d316-1c4b-4281-b951-d872f2087c98
void ChildProcessSecurityPolicyImpl::GrantScheme(int child_id,
                                                 const std::string& scheme) {
  base::AutoLock lock(lock_);

  SecurityStateMap::iterator state = security_state_.find(child_id);
  if (state == security_state_.end())
    return;

  state->second->GrantScheme(scheme);
}

void ChildProcessSecurityPolicyImpl::GrantScheme(int child_id,
                                                 const std::string& scheme) {
  base::AutoLock lock(lock_);

  SecurityStateMap::iterator state = security_state_.find(child_id);
  if (state == security_state_.end())
    return;

  state->second->GrantScheme(scheme);
}
