* 9347c93fc Roll src/third_party/dart c8ed304e979a..3414b5167554 (52 commits) (flutter/engine#16362)
* 16cd6f093 Roll fuchsia/sdk/core/mac-amd64 from 6h3IH... to Ke00Y... (flutter/engine#16360)
* 8c6cc65cd Fix runtime type errors when running with canvaskit (flutter/engine#16312)
* 677b563b9 Refactor of Vulkan GPUSurface code (flutter/engine#16224)
* 7ca44d339 Kill the test harness if any test exceeds a timeout. (flutter/engine#16349)
* 7f6149cbd Revert "Remove use of the deprecated AccessibilityNodeInfo boundsInPa… (flutter/engine#16355)
* 488f489bc Roll fuchsia/sdk/core/linux-amd64 from Tszo5... to VJv0H... (flutter/engine#16363)
* 7c9b11a80 Roll src/third_party/skia 71ce449d2814..2aee7d24da8f (5 commits) (flutter/engine#16364)
* 7e1d1440a Expose enable-service-port-fallback switch (flutter/engine#16366)
* 4cda916d5 Expose the dart kernel snapshot target and copied assets as a public dependency (flutter/engine#16266)
* 73c513041 Roll src/third_party/dart 3414b5167554..68e904e444dc (17 commits) (flutter/engine#16367)
* 1cd8f3b1a Fix and consolidate wstring conversion utils (flutter/engine#16342)
* b98a39e0b Add docs (flutter/engine#16368)
* e3e6de2ae Roll buildroot to c44791c89d2b51bfce864ab2cf5228d41ece1fcc (flutter/engine#16371)
* e24ec598e Fuchsia a11y actions (flutter/engine#16321)
* d8400c9cc Roll src/third_party/skia 2aee7d24da8f..14d64afaa8a3 (10 commits) (flutter/engine#16374)
* eeabd4d86 Roll src/third_party/dart 68e904e444dc..48808f7dce81 (17 commits) (flutter/engine#16377)
* 22b994c9c Roll fuchsia/sdk/core/mac-amd64 from Ke00Y... to ubThi... (flutter/engine#16378)
* 0471f44e9 Roll src/third_party/skia 14d64afaa8a3..6c9b1fd6663e (7 commits) (flutter/engine#16380)
* 852d8244c Roll src/third_party/dart 48808f7dce81..34893faa6079 (7 commits) (flutter/engine#16381)
* 4aa2083cf Roll src/third_party/skia 6c9b1fd6663e..bc3307c395e2 (1 commits) (flutter/engine#16383)
* 036c370c3 Copied Apple's semantics for switches, made checkboxes the same. (flutter/engine#16211)
* c107969ec fix build_id logic for fuchsia symbols (flutter/engine#16397)
* 11b770489 [fuchsia] Migrate flutter runner to use Present2 (flutter/engine#14162)
* 646ec3544 Update license output (flutter/engine#16379)
* 925c60b38 Fix Windows embedding issues caught by clang (flutter/engine#16369)
* 31bf3e110 Roll src/third_party/dart 34893faa6079..b3396cbdcae1 (36 commits) (flutter/engine#16422)
* 8f89bac4b [web] Fixes incorrect transform when context save and transforms are deferred. (flutter/engine#16412)
* f34bc65be use percent for golden diff rates; tighten the values (flutter/engine#16430)
* Remove usages of StackTraceMapper
This class will be replaced with a function type in `test_api`, clean up
usages ahead of time.
In `build_script.dart` the only reference to `StackTraceMapper` is in
the `browser_test.dart` file, but since nothing would call
`setStackTraceMapper` from that import it should be safe to remove the
definition. After reading a serialized mapper from the
`test.browser.mapper` channel, it was ignored.
In `flutter_web_platform.dart` we only were reading from `_mappers`,
never putting values in, so we can remove it entirely. The `load()`
function was never called with a `mapper` argument.
