This is a combination of 3 reverts, required to get back to the revert that caused `ios_platform_view_tests` to start failing in the framework repo. In reverse chronological order, this reverts two trivial commits plus the non-trivial commit that likely caused the breakage: * Revert "iOS: Eliminate global in platformviews controller (#56805)" This reverts commit cea4600caa7098fa7ec109d18b869db46cda726a. * Revert "iOS: Delete FlutterPlatformViewsController.layerPoolSize (#56806)" This reverts commit 80fa8a590876e0d29055b9ddbfa8670c1f83759e. * Revert "iOS: Migrate PlatformViewsController to Objective-C (#56790)" This reverts commit afd05afc406deb79fbe9c16684aeeeb19322b288. [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
Flutter Engine
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