Function createCrypto

test/unit/test-crypto.js:106–123

(win)

  }

  function createCrypto(win) {
    if (!win.document) {
      win.document = env.win.document;
    }
    win.performance = new FakePerformance(win);
    installDocService(win, /* isSingleDoc */ true);
    installExtensionsService(win);
    const extensions = Services.extensionsFor(win);
    env.sandbox
      .stub(extensions, 'preloadExtension')
      .callsFake((extensionId) => {
        expect(extensionId).to.equal('amp-crypto-polyfill');
        installCryptoPolyfill(win);
        return Promise.resolve();
      });

    return new Crypto(win);
  }

  function isModernChrome() {
    const platform = new Platform(window);