Chromium

• Changed: Trailing comma in JavaScript function parameter lists

  Status	Behind a flag	→	Enabled by default
  Android	55	→	58
  Desktop	55	→	58
  ShippedMilestone	55	→	58
  ShippedOperaAndroidMilestone	42	→	45
  ShippedOperaMilestone	42	→	45
  ShippedWebViewMilestone	55	→	58

• Changed: Link header support for the "prefetch" rel value

  Status	In development	→	Enabled by default
  Android	(n/a)	→	56
  Desktop	(n/a)	→	56
  ShippedMilestone	(n/a)	→	56
  ShippedOperaAndroidMilestone	(n/a)	→	43
  ShippedOperaMilestone	(n/a)	→	43
  ShippedWebViewMilestone	(n/a)	→	56

• Added: ReferrerPolicy: HTMLLinkElement referrerpolicy attribute

  Status	Enabled by default