Returns value for event handlers that have the 'blocking' extraInfoSpec applied. Allows the event handler to modify network requests.

class BlockingResponse extends ChromeObject {
 BlockingResponse({bool cancel, String redirectUrl, HttpHeaders requestHeaders, HttpHeaders responseHeaders, AuthCredentialsWebRequest authCredentials}) {
   if (cancel != null) this.cancel = cancel;
   if (redirectUrl != null) this.redirectUrl = redirectUrl;
   if (requestHeaders != null) this.requestHeaders = requestHeaders;
   if (responseHeaders != null) this.responseHeaders = responseHeaders;
   if (authCredentials != null) this.authCredentials = authCredentials;
 }
 BlockingResponse.fromProxy(JsObject jsProxy): super.fromProxy(jsProxy);

 /**
  * If true, the request is cancelled. Used in onBeforeRequest, this prevents
  * the request from being sent.
  */
 bool get cancel => jsProxy['cancel'];
 set cancel(bool value) => jsProxy['cancel'] = value;

 /**
  * Only used as a response to the onBeforeRequest event. If set, the original
  * request is prevented from being sent and is instead redirected to the given
  * URL.
  */
 String get redirectUrl => jsProxy['redirectUrl'];
 set redirectUrl(String value) => jsProxy['redirectUrl'] = value;

 /**
  * Only used as a response to the onBeforeSendHeaders event. If set, the
  * request is made with these request headers instead.
  */
 HttpHeaders get requestHeaders => _createHttpHeaders(jsProxy['requestHeaders']);
 set requestHeaders(HttpHeaders value) => jsProxy['requestHeaders'] = jsify(value);

 /**
  * Only used as a response to the onHeadersReceived event. If set, the server
  * is assumed to have responded with these response headers instead. Only
  * return `responseHeaders` if you really want to modify the headers in order
  * to limit the number of conflicts (only one extension may modify
  * `responseHeaders` for each request).
  */
 HttpHeaders get responseHeaders => _createHttpHeaders(jsProxy['responseHeaders']);
 set responseHeaders(HttpHeaders value) => jsProxy['responseHeaders'] = jsify(value);

 /**
  * Only used as a response to the onAuthRequired event. If set, the request is
  * made using the supplied credentials.
  */
 AuthCredentialsWebRequest get authCredentials => _createAuthCredentialsWebRequest(jsProxy['authCredentials']);
 set authCredentials(AuthCredentialsWebRequest value) => jsProxy['authCredentials'] = jsify(value);
}