Tong Mu 2e551cb5c3 Multi-view pointer event (flutter/engine#46213)
This PR adds a new field `view_id` to embedder API's `FlutterPointerEvent`, allowing platforms to specify the source view of pointer events.

https://github.com/flutter/flutter/issues/112205

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
2023-12-20 19:21:22 +00:00
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