I've managed to make it work on Windows with the WGL_NV_DX_interop extensions - sharing textures between d3d11 and openGl.
I'm doing it in the off screen renderer.
It works with every graphics card I've found, surprisingly including intel on chip graphics
My code is quite application and openFrameworks specific and is certainly not suitable for merging to CEF.
But for what is worth I've attached the off screen renderer code - comments would be very welcome!
There is also a basic example of how to share textures at
https://github.com/rjx-ray/ofDxSharedTextureExample