The FIDL library fuchsia.deprecatedtimezone is going away. There are
different and better ways to obtain the same functionality. This change
removes the dependency on fuchsia.deprecatedtimezone from the Dart SDK.
Adds inspect metrics that allow whitebox testing of the runners. Here's
a sample `fx iquery` excerpt from a running device, showing both a dart
and a flutter runner exposing the same OS diagnostic metrics.
```
/hub/c/dart_jit_runner.cmx/70981/out/diagnostics:
/hub/c/dart_jit_runner.cmx/70981/out/diagnostics#os:
dst_status = 0
get_profile_status = 0
timezone_content_status = 0
tz_data_close_status = 0
tz_data_status = 0
/hub/c/flutter_jit_runner.cmx/29567/out/diagnostics:
/hub/c/flutter_jit_runner.cmx/29567/out/diagnostics#os:
dst_status = 0
get_profile_status = 0
timezone_content_status = 0
tz_data_close_status = 0
tz_data_status = 0
```
Under nominal operation, all of the above values should be equal to 0.
Nonzero values indicate an error.
This functionality is guarded by Fuchsia integration tests at
//src/tests/intl.
Tested:
(compile locally for Fuchsia and deploy)
fx test //src/tests/intl
Fixes#39650
Change-Id: I5fc3ed305301abe1b183948a7cf478e014f351e7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149206
Commit-Queue: Filip Filmar <fmil@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Filip Filmar
cf30ff2953