What's new in the WebKitGTK 2.47.90 release?
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  - Ensure WebKitCookieManager APIs keep cookie cache up to date.
  - Use two GPU rendering threads if the system has more than 4 cores.
  - Fix web view contents not rendered in some cases.
  - Fix invalid DPI-aware font size conversion.
  - Reduce memory copies when rendering DMABufs video frames.
  - Translation updates: Brazilian Portuguese.