[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
void OmniboxEditModel::OnKillFocus() {
  SetFocusState(OMNIBOX_FOCUS_NONE, OMNIBOX_FOCUS_CHANGE_EXPLICIT);
  focus_source_ = INVALID;
  control_key_state_ = UP;
  paste_state_ = NONE;
}

void OmniboxEditModel::OnKillFocus() {
  SetFocusState(OMNIBOX_FOCUS_NONE, OMNIBOX_FOCUS_CHANGE_EXPLICIT);
  focus_source_ = INVALID;
  control_key_state_ = UP;
  paste_state_ = NONE;
}
