3d2ab872b8
<!-- Thanks for filing a pull request! Reviewers are typically assigned within a week of filing a request. To learn more about code review, see our documentation on Tree Hygiene: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md --> 1. Replaced `mainScreen` in `FlutterPlatformViewsController` with the `screeScale` of the `screen` that the `flutterViewController` is attached to. Updated API usage of `FlutterClippingMaskViewPool` and `OverlayLayerPool` by providing the correct `screenScale` from the screen that the `flutterViewController` is attached to. 2. Replaced `mainScreen` in `OverlayLayerPool` by adding an API for the `screenScale` to be provided by the class user. 3. Replaced `mainScreen` in `FlutterClippingMaskViewPool` by adding an API for the `screenScale` to be provided by the class user. 4. Replaced `mainScreen` in `FlutterPlatformViewsTest` by adding a mocked `FlutterViewController` which has a mocked `screen` with a mocked `screenScale`. The `flutterViewController` is then provided the to the `flutterPlatformViewsController`. All of the above changes allow platform views and their overlays displayed on an external screen to be properly scaled when rendered. Fixes #130832. I believe this fixed #130825 since FlutterPlatformViews_Internal.mm does not exist but the definition of the interfaces declared in FlutterPlatformViews_Internal.h are part of the files modified by this pr. This pr also replaces `mainScreen` in `overlay_layer_pool.mm`. ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [ ] I updated/added relevant documentation (doc comments with `///`). - [x] I updated/added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
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