Move smart deploy to tristate.

BUG=

Review URL: https://codereview.chromium.org/1149383006

Cr-Commit-Position: refs/heads/master@{#333058}
std::string GetKeyboardLayout() {
  return GetAccessibilityKeyboardEnabled() ? "system-qwerty" : "qwerty";
}

std::string GetKeyboardLayout() {
  return GetAccessibilityKeyboardEnabled() ? "system-qwerty" : "qwerty";
}
