[fuchsia] Fix portable_ui_test.h includes for newer Fuchsia SDKs - #195420

flutter/flutter@d4c8577...0c2473c

2026-10-28 [email protected] Roll Packages from a8549ae to 13d38e0 (9 revisions) (flutter/flutter#195488)
2026-10-28 [email protected] Use int.oneBitCount in PersistentHashMap and scope 53-bit caps to JS (flutter/flutter#195005)
2026-10-28 [email protected] Roll pub packages (flutter/flutter#195483)
2026-10-28 [email protected] [iPhone Duo] Use the correct UIScreen to report the display size and update when fold/unfold (flutter/flutter#195199)
2026-10-28 [email protected] [fuchsia] Fix portable_ui_test.h includes for newer Fuchsia SDKs (flutter/flutter#195420)
2026-10-28 [email protected] Change default pipeline options to match production draw calls (flutter/flutter#194597)
2026-10-28 [email protected] Roll Fuchsia Test Scripts from 2T18KC7-LDQtmQiLP... to xl1LWBuppzu-BnOzV... (flutter/flutter#195450)
2026-10-27 [email protected] [flutter_tools] Inject dependencies into Darwin build targets, native assets, and Xcode build settings (flutter/flutter#194052)
2026-10-27 [email protected] Revert: Reland square corners fix (flutter/flutter#195436)
2026-10-27 [email protected] [flutter_tools] Add DeviceService app launch and flutter run support for tool extensions (flutter/flutter#194589)
2026-10-27 [email protected] [engine] Honor targetWidth/targetHeight for animated images (flutter/flutter#194615)
2026-10-27 [email protected] [Android][a11y] Set visibleToUser=false for hidden semantics nodes (flutter/flutter#194411)
2026-10-27 [email protected] Fix repo deletion test flake (flutter/flutter#195349)
2026-10-27 [email protected] Roll Packages from 23a05b6 to a8549ae (10 revisions) (flutter/flutter#195434)
2026-10-27 [email protected] [web] Capture pointers to the Flutter view so drags survive platform view iframes (flutter/flutter#195187)
2026-10-27 [email protected] [web] Add opt-in raw samples, measured sample count and warm-up phase hook to the web benchmark recorder (flutter/flutter#195118)
2026-10-27 [email protected] Link migration guide in deprecation messages (flutter/flutter#195361)
2026-10-27 [email protected] Pin basic_material_app_macos__compile to macOS 26 (flutter/flutter#195429)
2026-10-27 [email protected] Add benchmark for warmed pipeline usage (flutter/flutter#195001)
2026-10-27 [email protected] [flutter_tools] Add device log streaming support to DeviceService and ExtensionBackedDevice (flutter/flutter#194964)
2026-10-27 [email protected] Roll Dart SDK from 1d16c04dc346 to 65fc979759ca (4 revisions) (flutter/flutter#195383)

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…tter#195420)

The Fuchsia Linux SDK roll into Flutter has not landed since 2026-09-28.
Every
roll attempt (for example flutter#195418) fails `Linux linux_fuchsia_tests`
because
`text-input-test`, `touch-input-test`, and `mouse-input-test` no longer
compile:

```
portable_ui_test.h:8:10: fatal error: 'fuchsia/sysmem2/cpp/fidl.h' file not found
portable_ui_test.h:10:10: fatal error: 'fuchsia/ui/composition/cpp/fidl.h' file not found
```

`portable_ui_test.h` includes the `fuchsia.sysmem2` and
`fuchsia.ui.composition`
bindings, but only `portable_ui_test.cc` uses them, and both are private
`deps`
of `:portable_ui_test`. The tests were only finding these headers
transitively
through `fuchsia.accessibility.semantics` -> `fuchsia.ui.gfx`, and
https://fuchsia-review.googlesource.com/c/fuchsia/+/1617688 removed
those
`fuchsia.ui.gfx` dependencies.

This PR:

- Drops the `fuchsia.sysmem2` and `fuchsia.ui.composition` includes from
  `portable_ui_test.h`.
- Includes `fuchsia.ui.composition` in `portable_ui_test.cc`, which uses
it
  (`fuchsia.sysmem2` is already included there).
- Includes `fuchsia.ui.observation.geometry` directly in
`portable_ui_test.h`,
  which uses its types but was previously getting the header through
  `fuchsia.ui.test.scene`.

This builds against both the currently pinned SDK and newer SDKs. It is
a
follow-up to flutter#193244, which removed the unused
`fuchsia/sysmem/cpp/fidl.h`
includes for the same Fuchsia change.

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