3d0f937569
Adds RPCs that allow for service clients to convert URIs from absolute paths to unresolved package URIs and vice-versa. Fixes https://github.com/dart-lang/sdk/issues/46631 TEST=uri_mappings_lookup_test.dart Change-Id: I06e56e37dc0d4fe505527f8fb246c07caef5e058 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/217744 Commit-Queue: Ben Konyi <bkonyi@google.com> Reviewed-by: Jacob Richman <jacobr@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>