Commits on Jul 31, 2020

1. Place floats in layout 2020, but don't flow text around the floats yet. …

   This commit puts floats behind the `layout.floats.enabled` pref, because of the
   following issues and unimplemented features:
   
   * Inline formatting contexts don't take floats into account, so text doesn't
     flow around the floats yet.
   
   * Non-floated block formatting contexts don't take floats into account, so BFCs
     can overlap floats.
   
   * The `clear` property is only respected on floats, not on other elements; i.e.
     regular boxes can't clear past floats yet.
   
   * Block formatting contexts that contain floats don't expand vertically to
     contain all the floats. That is, floats can stick out the bottom of BFCs,
     contra spec.
   
   * Floats don't respect negative margins yet.
   
   * Floats are painted in the same order as regular content, contra spec.

   

   pcwalton committed Jul 31, 2020

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