Bug 1914862 - Add a TELEMETRY profiler cateogry, r=canaltinova,profiler-reviewers,aabh.

Differential Revision: https://phabricator.services.mozilla.com/D220132

mozglue/baseprofiler/build/profiling_categories.yaml

@@ -312,3 +312,10 @@
   subcategories:
     - name: SANDBOX
       label: Other
+
+- name: TELEMETRY
+  label: Telemetry
+  color: grey
+  subcategories:
+    - name: TELEMETRY
+      label: Other

toolkit/components/telemetry/core/Stopwatch.cpp

@@ -395,7 +395,7 @@ int32_t Timers::Finish(JSContext* aCx, const nsAString& aHistogram,
       markerText.AppendLiteral(":");
       markerText.Append(NS_ConvertUTF16toUTF8(aKey));
     }
-    PROFILER_MARKER_TEXT("TelemetryStopwatch", OTHER,
+    PROFILER_MARKER_TEXT("Stopwatch", TELEMETRY,
                          MarkerTiming::IntervalUntilNowFrom(timer->StartTime()),
                          markerText);
   }