code: function sanitizeStyle(value) {
      value = String(value).trim(); // Make sure it's actually a string.
      if (!value)
          return '';
      // Single url(...) values are supported, but only for URLs that sanitize cleanly. See above for
      // reasoning behind this.
      var /** @type {?} */ urlMatch = value.match(URL_RE);
      if ((urlMatch && __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_2__url_sanitizer__["a" /* sanitizeUrl */])(urlMatch[1]) === urlMatch[1]) ||
          value.match(SAFE_STYLE_VALUE) && hasBalancedQuotes(value)) {
          return value; // Safe style values.
      }
      if (__webpack_require__.i(__WEBPACK_IMPORTED_MODULE_0__angular_core__["isDevMode"])()) {
          __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1__dom_dom_adapter__["b" /* getDOM */])().log("WARNING: sanitizing unsafe style value " + value + " (see http://g.co/ng/security#xss).");
      }
      return 'unsafe';
  }
docs: Sanitizes the given untrusted CSS style property value (i.e. not an entire object, just a single
  value) and returns a value that is safe to use in a browser environment.
  @param {?} value
  @return {?}