function getEffectiveSizingRule({attributesStyle, inlineStyle, matchedCSSRules}, property) {
  // CSS sizing can't be inherited.
  // We only need to check inline & matched styles.
  // Inline styles have highest priority.
  const inlineRule = findSizeDeclaration(inlineStyle, property);
  if (inlineRule) return inlineRule;

  const attributeRule = findSizeDeclaration(attributesStyle, property);
  if (attributeRule) return attributeRule;

  // Rules directly referencing the node come next.
  const matchedRule = findMostSpecificCSSRule(matchedCSSRules, property);
  if (matchedRule) return matchedRule;

  return null;
}
@param {LH.Crdp.CSS.GetMatchedStylesForNodeResponse} matched CSS rules}
@param {string} property
@return {string | null}