HW accelerated CEF (windows)

[fpn]

There is a production grade patch for cef for GPU accelerated rendering:

https://bitbucket.org/chromiumembedded/cef/pull-requests/158/support-external-textures-in-osr-mode/diff

• build against this version of CEF
• add support for OnAcceleratedPaint
• use DXGI / memory / interop texture

Seems this version of cef (3497) will also need:

--autoplay-policy=no-user-gesture-required
--disable-features=PreloadMediaEngagementData,AutoplayIgnoreWebAudio, MediaEngagementBypassAutoplayPolicies.