code: function getElementStyle(element) {
    assertHTMLElement(element);
    return genericPropertyGet(
        Methods.STYLE_GETTER, element, 'style', function(style) {
          return style instanceof CSSStyleDeclaration;
        });
  }
docs: Returns an element's style without falling prey to things like
  <form><input name="style"></form>.
  @param {!Element} element
  @return {!CSSStyleDeclaration}