diff --git a/js/xpconnect/src/XPCWrappedNativeScope.cpp b/js/xpconnect/src/XPCWrappedNativeScope.cpp
index 48d5c7028ef..502088076dd 100644
--- a/js/xpconnect/src/XPCWrappedNativeScope.cpp
+++ b/js/xpconnect/src/XPCWrappedNativeScope.cpp
@@ -20,67 +20,6 @@ using namespace JS;
 
 /***************************************************************************/
 
-#ifdef XPC_TRACK_SCOPE_STATS
-static int DEBUG_TotalScopeCount;
-static int DEBUG_TotalLiveScopeCount;
-static int DEBUG_TotalMaxScopeCount;
-static int DEBUG_TotalScopeTraversalCount;
-static bool    DEBUG_DumpedStats;
-#endif
-
-#ifdef DEBUG
-static void DEBUG_TrackNewScope(XPCWrappedNativeScope* scope)
-{
-#ifdef XPC_TRACK_SCOPE_STATS
-    DEBUG_TotalScopeCount++;
-    DEBUG_TotalLiveScopeCount++;
-    if (DEBUG_TotalMaxScopeCount < DEBUG_TotalLiveScopeCount)
-        DEBUG_TotalMaxScopeCount = DEBUG_TotalLiveScopeCount;
-#endif
-}
-
-static void DEBUG_TrackDeleteScope(XPCWrappedNativeScope* scope)
-{
-#ifdef XPC_TRACK_SCOPE_STATS
-    DEBUG_TotalLiveScopeCount--;
-#endif
-}
-
-static void DEBUG_TrackScopeTraversal()
-{
-#ifdef XPC_TRACK_SCOPE_STATS
-    DEBUG_TotalScopeTraversalCount++;
-#endif
-}
-
-static void DEBUG_TrackScopeShutdown()
-{
-#ifdef XPC_TRACK_SCOPE_STATS
-    if (!DEBUG_DumpedStats) {
-        DEBUG_DumpedStats = true;
-        printf("%d XPCWrappedNativeScope(s) were constructed.\n",
-               DEBUG_TotalScopeCount);
-
-        printf("%d XPCWrappedNativeScopes(s) max alive at one time.\n",
-               DEBUG_TotalMaxScopeCount);
-
-        printf("%d XPCWrappedNativeScope(s) alive now.\n" ,
-               DEBUG_TotalLiveScopeCount);
-
-        printf("%d traversals of Scope list.\n",
-               DEBUG_TotalScopeTraversalCount);
-    }
-#endif
-}
-#else
-#define DEBUG_TrackNewScope(scope) ((void)0)
-#define DEBUG_TrackDeleteScope(scope) ((void)0)
-#define DEBUG_TrackScopeTraversal() ((void)0)
-#define DEBUG_TrackScopeShutdown() ((void)0)
-#endif
-
-/***************************************************************************/
-
 XPCWrappedNativeScope* XPCWrappedNativeScope::gScopes = nullptr;
 XPCWrappedNativeScope* XPCWrappedNativeScope::gDyingScopes = nullptr;
 
@@ -156,7 +95,6 @@ XPCWrappedNativeScope::XPCWrappedNativeScope(JSContext *cx,
         mContext->AddScope(this);
     }
 
-    DEBUG_TrackNewScope(this);
     MOZ_COUNT_CTOR(XPCWrappedNativeScope);
 
     // Attach ourselves to the compartment private.
@@ -310,7 +248,6 @@ bool UseXBLScope(JSCompartment *c)
 XPCWrappedNativeScope::~XPCWrappedNativeScope()
 {
     MOZ_COUNT_DTOR(XPCWrappedNativeScope);
-    DEBUG_TrackDeleteScope(this);
 
     // We can do additional cleanup assertions here...
 
@@ -495,8 +432,6 @@ XPCWrappedNativeScope::MarkAllWrappedNativesAndProtos()
         cur->mWrappedNativeProtoMap->Enumerate(WrappedNativeProtoMarker, nullptr);
         cur->mMainThreadWrappedNativeProtoMap->Enumerate(WrappedNativeProtoMarker, nullptr);
     }
-
-    DEBUG_TrackScopeTraversal();
 }
 
 #ifdef DEBUG
@@ -542,8 +477,6 @@ XPCWrappedNativeScope::SweepAllWrappedNativeTearOffs()
 {
     for (XPCWrappedNativeScope* cur = gScopes; cur; cur = cur->mNext)
         cur->mWrappedNativeMap->Enumerate(WrappedNativeTearoffSweeper, nullptr);
-
-    DEBUG_TrackScopeTraversal();
 }
 
 // static
@@ -598,9 +531,6 @@ WrappedNativeProtoShutdownEnumerator(PLDHashTable *table, PLDHashEntryHdr *hdr,
 void
 XPCWrappedNativeScope::SystemIsBeingShutDown()
 {
-    DEBUG_TrackScopeTraversal();
-    DEBUG_TrackScopeShutdown();
-
     int liveScopeCount = 0;
 
     ShutdownData data;
@@ -679,8 +609,6 @@ XPCWrappedNativeScope::ClearAllWrappedNativeSecurityPolicies()
         cur->mMainThreadWrappedNativeProtoMap->Enumerate(WNProtoSecPolicyClearer, nullptr);
     }
 
-    DEBUG_TrackScopeTraversal();
-
     return NS_OK;
 }
 
diff --git a/js/xpconnect/src/xpcprivate.h b/js/xpconnect/src/xpcprivate.h
index f452078f3b8..6d3a6524a6b 100644
--- a/js/xpconnect/src/xpcprivate.h
+++ b/js/xpconnect/src/xpcprivate.h
@@ -181,7 +181,6 @@
 #if defined(DEBUG_xpc_hacker)
 #define XPC_DUMP_AT_SHUTDOWN
 #define XPC_TRACK_WRAPPER_STATS
-#define XPC_TRACK_SCOPE_STATS
 #endif
 
 /***************************************************************************/