[Lighthouse] Add category metric compatibility

Should have been added in:
https://crrev.com/c/4863112

Bug: None
Change-Id: Id4cf0a3fa55170a07936d3ee08f08e41882b28c6
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/4935921
Reviewed-by: Mathias Bynens <[email protected]>
Commit-Queue: Adam Raine <[email protected]>
diff --git a/front_end/devtools_compatibility.js b/front_end/devtools_compatibility.js
index de4dae9..97b8572 100644
--- a/front_end/devtools_compatibility.js
+++ b/front_end/devtools_compatibility.js
@@ -419,6 +419,7 @@
   KeyboardShortcutFired: 'DevTools.KeyboardShortcutFired',
   Language: 'DevTools.Language',
   LighthouseModeRun: 'DevTools.LighthouseModeRun',
+  LighthouseCategoryUsed: 'DevTools.LighthouseCategoryUsed',
   LinearMemoryInspectorRevealedFrom: 'DevTools.LinearMemoryInspector.RevealedFrom',
   LinearMemoryInspectorTarget: 'DevTools.LinearMemoryInspector.Target',
   ManifestSectionSelected: 'DevTools.ManifestSectionSelected',