#include #include endpoint CompositorClient { did_allocate_backing_stores(u64 page_id, i32 front_bitmap_id, Gfx::SharedImage front_backing_store, i32 back_bitmap_id, Gfx::SharedImage back_backing_store) =| did_paint(u64 page_id, Gfx::IntRect content_rect, i32 bitmap_id) =| }