function mockMixedContent(details) {
  return {
    code: 'MixedContentIssue',
    details: {
      mixedContentIssueDetails: {
        resolutionStatus: 'MixedContentBlocked',
        insecureURL: 'https://example.com',
        mainResourceURL: 'https://example.com',
        ...details,
      },
    },
  };
}
@param {Partial<LH.Crdp.Audits.MixedContentIssueDetails>=} details
@return {LH.Crdp.Audits.InspectorIssue} partial