[OriginChip] Re-enable the chip as necessary when switching tabs.

BUG=369500

Review URL: https://codereview.chromium.org/292493003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271161 0039d316-1c4b-4281-b951-d872f2087c98
bool OmniboxEditModel::KeywordIsSelected() const {
  return !is_keyword_hint_ && !keyword_.empty();
}

bool OmniboxEditModel::KeywordIsSelected() const {
  return !is_keyword_hint_ && !keyword_.empty();
}
