Part of https://github.com/flutter/flutter/issues/142845 Requires https://github.com/flutter/flutter/issues/144806 Design doc: https://flutter.dev/go/multi-view-embedder-apis * [ ] Windows * [x] Add view * [x] Remove view * [x] Present to view callback that's multi-view compatible * [x] Window metrics with view ID * [x] Pointer events with view ID * [ ] Accessibility * [ ] Disable the implicit view * [ ] macOS
