code: function sanitizeHistorySensitive(blockOfProperties) {
      var elide = false;
      for (var i = 0, n = blockOfProperties.length; i < n-1; ++i) {
        var token = blockOfProperties[i];
        if (':' === blockOfProperties[i+1]) {
          elide = !(cssSchema[token].cssPropBits & CSS_PROP_BIT_ALLOWED_IN_LINK);
        }
        if (elide) { blockOfProperties[i] = ''; }
        if (';' === token) { elide = false; }
      }
      return blockOfProperties.join('');
    }
docs: Given a series of sanitized tokens, removes any properties that would
  leak user history if allowed to style links differently depending on
  whether the linked URL is in the user's browser history.
  @param {Array.<string>} blockOfProperties