a0f467f0e9
The analyzer already has an enum with the same name, but a slightly different declaration. (The analyzer's enum declares only severities of `error`, `warning`, and `info`, whereas the CFE's enum also declares severities of `context`, `ignored`, and `internalProblem`). I'm currently embarking on an arc of work that I hope will eventually culminate in unifying the analyzer and CFE diagnostic message representations (and their severities) into a single set of classes. Until that unification is complete, both representations will have to co-exist in the `_fe_analyzer_shared` package. To reduce confusion during that time period, I would like the classes to have distinct names. Since the analyzer's `Severity` enum is exposed through the analyzer public API, analyzer clients may depend on the name. So it makes sense to rename the CFE's `Severity` enum. Tested: standard trybots Change-Id: I95622950f49b1754267e441e4636e046045629bb Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/442102 Reviewed-by: Liam Appelbe <liama@google.com> Reviewed-by: Mayank Patke <fishythefish@google.com> Commit-Queue: Paul Berry <paulberry@google.com> Reviewed-by: Ömer Ağacan <omersa@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>