Rework the WaylandCompositorDispmanX implementation.
Improve the GtkWidget redraw queueing in WaylandCompositorDispmanX.
Implement the necessary bits for zero-copy video playback.
Disable the baseline JIT and DFG optimization levels in JSC.
Remove unnecessary y-flip code path in MediaPlayerPrivateGStreamerBase::paintToTextureMapper().
Create WaylandSurface objects with fresh EGLContexts.