Tests interception blocking, modification of network fetches. Test started Network agent enabled Request interception enabled Page agent enabled Runtime agent enabled Request Intercepted: simple-iframe.html responseStatusCode: 200 responseHeaders: Accept-Ranges: bytes Connection: Keep-Alive Content-Length: 39 Content-Type: text/html Date: ETag: Keep-Alive: Last-Modified: Server: responseBody: hello world Body content received by renderer: This content was rewritten!