[local_storage] Add fxfs to event codes.

Change-Id: I36bbc1993e96cb31cd5d6382f4d5b2b0f65e78d4
Reviewed-on: https://fuchsia-review.googlesource.com/c/cobalt-registry/+/680149
Privacy-Approval: Steve Fung <stevefung@google.com>
Reviewed-by: Steve Fung <stevefung@google.com>
Commit-Queue: Brandon Castellano <bcastell@google.com>
diff --git a/fuchsia/local_storage/metrics.yaml b/fuchsia/local_storage/metrics.yaml
index fd8b08b..5884396 100644
--- a/fuchsia/local_storage/metrics.yaml
+++ b/fuchsia/local_storage/metrics.yaml
@@ -26,6 +26,7 @@
         1: fvm
         2: blobfs
         3: minfs
+        4: fxfs
   int_buckets: &ll_buckets
     exponential:
       floor: 0
@@ -680,6 +681,7 @@
         1: Fvm
         2: BlobFs
         3: MinFs
+        4: FxFs
     - dimension: "corruption_type"
       event_codes:
         0: Unknown