[web] Unskip and strengthen missing glyph tofu test on Wimp - #193426

…13104)

Manual roll requested by [email protected]

flutter/flutter@d649d2b...e89fd0a

2026-10-01 [email protected] Manual roll ICU from 6ebb40c59477 to 5aa526207171 (2 revisions) (flutter/flutter#193661)
2026-10-01 [email protected] fix(web): hash source maps before rewriting sourceMappingURL with --web-content-hash (flutter/flutter#193614)
2026-10-01 [email protected] [flutter_tools] Bootstrap DeviceManager in ToolDependencies (flutter/flutter#193524)
2026-10-01 [email protected] [wasm] Set flutter_runtime_mode in tools/gn to_gn_wasm_args (flutter/flutter#193407)
2026-10-01 [email protected] Remove remaining `download_jdk` references (flutter/flutter#193562)
2026-10-01 [email protected] Synchronize dart2wasm feature probes in roll script and flutter_bootstrap.js (flutter/flutter#193271)
2026-10-01 [email protected] [web] Unskip web tests that now pass in gestures, services, and widgets (flutter/flutter#193512)
2026-10-01 [email protected] Roll Fuchsia Test Scripts from whZAV1mfT-Rdc0rQ8... to fCNknap4ZI0AMcvIf... (flutter/flutter#193640)
2026-10-01 [email protected] Roll Skia from 0575a37d0619 to f2d68e0b8863 (2 revisions) (flutter/flutter#193621)
2026-10-01 [email protected] perf(widgets): use const <Never>{} in InheritedModelElement and avoid redundant casts in RenderObjectElement.update (flutter/flutter#192913)
2026-10-01 [email protected] [web] Unskip and strengthen missing glyph tofu test on Wimp (flutter/flutter#193426)
2026-10-01 [email protected] [flutter_tools] Fix `flutter drive -d chrome` hanging on web (flutter/flutter#193459)
2026-10-01 [email protected] [web] Fix hang when Chromium cannot bind remote debugging port (flutter/flutter#193461)
2026-10-01 [email protected] [flutter_tools] Bundle data assets from hooks in flutter test (flutter/flutter#193435)
2026-10-01 [email protected] Roll Packages from 0ba9a82 to d5ec6db (11 revisions) (flutter/flutter#193641)
2026-10-01 [email protected] Revert: [flutter_tools] Fix DTD "Stream already subscribed" error and wait for analysis over DTD in widget preview (flutter/flutter#193637)
2026-10-01 [email protected] Roll Skia from 6182a3cf8f98 to 0575a37d0619 (5 revisions) (flutter/flutter#193613)
2026-10-01 [email protected] [flutter_tools] Fix DTD "Stream already subscribed" error and wait for analysis over DTD in widget preview (flutter/flutter#192930)
2026-09-30 [email protected] [Impeller] Sample the render target rect in offscreen advanced blends (flutter/flutter#192988)
2026-09-30 [email protected] Roll Skia from 01524014dff5 to 6182a3cf8f98 (11 revisions) (flutter/flutter#193594)
2026-09-30 [email protected] [web] Use Xvfb -displayfd and clean up Xvfb after Firefox test suites (flutter/flutter#193510)
2026-09-30 [email protected] Fixes bug where sibling node fail to update size (flutter/flutter#191220)
2026-09-30 [email protected] Roll Skia from c7b323126bf0 to 01524014dff5 (3 revisions) (flutter/flutter#193577)
2026-09-30 [email protected] Remove some Undefined Behavior from run_customer_testing_tests.dart. (flutter/flutter#193582)
2026-09-30 [email protected] Fix pointer id/coordinate mismatch in Android platform view multi-touch (flutter/flutter#191631)
2026-09-30 [email protected] Roll Packages from 3c6ce59 to 0ba9a82 (11 revisions) (flutter/flutter#193578)
2026-09-30 [email protected] Fix unresolved doc comment references in dev/ tooling (flutter/flutter#193501)

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…193426)

Unskips `Renders tab as space instead of tofu` in
`engine/src/flutter/lib/web_ui/test/ui/text_test.dart` on Wimp
(`chrome-dart2wasm-wimp-ui`) and strengthens the test assertions:

- When `DlWimpImageFromPicture::GetImpellerTexture` was introduced in
flutter#175442 (`e0f544bf620`), it
constructed a temporary `impeller::AiksContext` with a `nullptr`
`TypographerContext`, causing `picture.toImage()` to drop text runs and
return blank images (which caused `matchImage(tabImage, tofuImage)` to
fail when the `!isWimp` skip was added in
flutter#183913 / `2490c22d5be`).
- flutter#191747 (`87c02198123`)
refactored `DlWimpImageFromPicture::GetImpellerTexture` to render via
`ImpellerRenderContext` (which owns the shared
`impeller::ContentContext` and `TypographerContextSkia::Make()`),
restoring `.notdef` glyph rendering in `picture.toImage()`.
- Removes the `!isWimp` guard so `Renders tab as space instead of tofu`
runs on both Skwasm and Wimp.
- Adds an assertion that unassigned non-control codepoints (`\u{0378}`)
also render a `.notdef` tofu box distinct from `''`, and disposes
`Paragraph`, `Picture`, and `Image` resources created inside `drawText`.

Fixes flutter#183944

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