and `for foo in bar.iter_mut(), and for foo in bar.into_iter()
(continuation of #7197)
Source-Repo: https://github.com/servo/servo
Source-Revision: 0d6d6a05009606dfbbfc9765d7dc2c745c18f6a5
We currently store LayerBuffers, because previously NativeSurfaces did
not record their own size. Now we can store NativeSurfaces directly,
which saves a bit of space in the surface cache and allows us to create
LayerBuffers only in the PaintTask.
This also means that instead of sending cached LayerBuffers, the
compositor can just send cached NativeSurfaces to the PaintTask.
Source-Repo: https://github.com/servo/servo
Source-Revision: 590cb33bb7ae9f4713a7c2ee8bfe1076c180e392
