diff --git a/dom/media/gmp/GMPServiceParent.cpp b/dom/media/gmp/GMPServiceParent.cpp
index 2b56e60c1453..ee84da67ed54 100644
--- a/dom/media/gmp/GMPServiceParent.cpp
+++ b/dom/media/gmp/GMPServiceParent.cpp
@@ -423,7 +423,23 @@ GeckoMediaPluginServiceParent::AsyncShutdownPluginStates::Update(const nsCString
   state->mStateSequence += aId;
   state->mLastStateDescription = aState;
   note += '{';
-  mStates.EnumerateRead(EnumReadPlugins, &note);
+  bool firstPlugin = true;
+  for (auto pluginIt = mStates.ConstIter(); !pluginIt.Done(); pluginIt.Next()) {
+    if (!firstPlugin) { note += ','; } else { firstPlugin = false; }
+    note += pluginIt.GetKey();
+    note += ":{";
+    bool firstInstance = true;
+    for (auto instanceIt = pluginIt.GetData()->ConstIter(); !instanceIt.Done(); instanceIt.Next()) {
+      if (!firstInstance) { note += ','; } else { firstInstance = false; }
+      note += instanceIt.GetKey();
+      note += ":\"";
+      note += instanceIt.GetData()->mStateSequence;
+      note += '=';
+      note += instanceIt.GetData()->mLastStateDescription;
+      note += '"';
+    }
+    note += '}';
+  }
   note += '}';
   LOGD(("%s::%s states[%s][%s]='%c'/'%s' -> %s", __CLASS__, __FUNCTION__,
         aPlugin.get(), aInstance.get(), aId, aState.get(), note.get()));
@@ -431,40 +447,6 @@ GeckoMediaPluginServiceParent::AsyncShutdownPluginStates::Update(const nsCString
     NS_LITERAL_CSTRING("AsyncPluginShutdownStates"),
     note);
 }
-
-// static
-PLDHashOperator
-GeckoMediaPluginServiceParent::AsyncShutdownPluginStates::EnumReadPlugins(
-  StateInstancesByPlugin::KeyType aKey,
-  StateInstancesByPlugin::UserDataType aData,
-  void* aUserArg)
-{
-  nsCString& note = *static_cast<nsCString*>(aUserArg);
-  if (note.Last() != '{') { note += ','; }
-  note += aKey;
-  note += ":{";
-  aData->EnumerateRead(EnumReadInstances, &note);
-  note += '}';
-  return PL_DHASH_NEXT;
-}
-
-// static
-PLDHashOperator
-GeckoMediaPluginServiceParent::AsyncShutdownPluginStates::EnumReadInstances(
-  StatesByInstance::KeyType aKey,
-  StatesByInstance::UserDataType aData,
-  void* aUserArg)
-{
-  nsCString& note = *static_cast<nsCString*>(aUserArg);
-  if (note.Last() != '{') { note += ','; }
-  note += aKey;
-  note += ":\"";
-  note += aData->mStateSequence;
-  note += '=';
-  note += aData->mLastStateDescription;
-  note += '"';
-  return PL_DHASH_NEXT;
-}
 #endif // MOZ_CRASHREPORTER
 
 void
diff --git a/dom/media/gmp/GMPServiceParent.h b/dom/media/gmp/GMPServiceParent.h
index 16de1d78c06e..3677753b55b6 100644
--- a/dom/media/gmp/GMPServiceParent.h
+++ b/dom/media/gmp/GMPServiceParent.h
@@ -152,12 +152,6 @@ private:
     struct State { nsAutoCString mStateSequence; nsCString mLastStateDescription; };
     typedef nsClassHashtable<nsCStringHashKey, State> StatesByInstance;
     typedef nsClassHashtable<nsCStringHashKey, StatesByInstance> StateInstancesByPlugin;
-    static PLDHashOperator EnumReadPlugins(StateInstancesByPlugin::KeyType aKey,
-                                           StateInstancesByPlugin::UserDataType aData,
-                                           void* aUserArg);
-    static PLDHashOperator EnumReadInstances(StatesByInstance::KeyType aKey,
-                                             StatesByInstance::UserDataType aData,
-                                             void* aUserArg);
     StateInstancesByPlugin mStates;
   } mAsyncShutdownPluginStates;
 #endif // MOZ_CRASHREPORTER