Function inject

packages/react-devtools-shell/src/perf-regression/devtools.js:18–23

(contentDocument, sourcePath)

}

function inject(contentDocument, sourcePath) {
  const script = contentDocument.createElement('script');
  script.src = sourcePath;

  ((contentDocument.body: any): HTMLBodyElement).appendChild(script);
}

function init(
  appSource: string,