1 files changed, 9 insertions, 1 deletions
diff --git a/toolkit/components/telemetry/core/ipc/TelemetryComms.h b/toolkit/components/telemetry/core/ipc/TelemetryComms.h
index 75f59209b0..57c875dedb 100644
--- a/toolkit/components/telemetry/core/ipc/TelemetryComms.h
+++ b/toolkit/components/telemetry/core/ipc/TelemetryComms.h
@@ -12,6 +12,7 @@
 #include "mozilla/TelemetryProcessEnums.h"
 #include "mozilla/TimeStamp.h"
 #include "mozilla/Variant.h"
+#include "mozilla/dom/WebGLIpdl.h"
 #include "nsITelemetry.h"
 
 namespace mozilla {
@@ -96,6 +97,13 @@ struct DiscardedData {
   uint32_t mDiscardedScalarActions;
   uint32_t mDiscardedKeyedScalarActions;
   uint32_t mDiscardedChildEvents;
+
+  auto MutTiedFields() {
+    return std::tie(mDiscardedHistogramAccumulations,
+                    mDiscardedKeyedHistogramAccumulations,
+                    mDiscardedScalarActions, mDiscardedKeyedScalarActions,
+                    mDiscardedChildEvents);
+  }
 };
 
 }  // namespace Telemetry
@@ -393,7 +401,7 @@ struct ParamTraits<mozilla::Telemetry::EventExtraEntry> {
 
 template <>
 struct ParamTraits<mozilla::Telemetry::DiscardedData>
-    : public PlainOldDataSerializer<mozilla::Telemetry::DiscardedData> {};
+    : public ParamTraits_TiedFields<mozilla::Telemetry::DiscardedData> {};
 
 }  // namespace IPC