Chromium

• Changed: Fire VisibilityChange event on document unloading

  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

• Changed: Fractional coordinates in MouseEvents

  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: UserAgent Stylesheets for Extensions

  Status	Proposed