Merge branch 'cycle_collector-work'

92 files changed, 55 insertions, 140 deletions

diff --git a/devtools/shared/jsinspector/nsJSInspector.cpp b/devtools/shared/jsinspector/nsJSInspector.cpp
index 6d717af5b..457e64c08 100644
--- a/devtools/shared/jsinspector/nsJSInspector.cpp
+++ b/devtools/shared/jsinspector/nsJSInspector.cpp
@@ -37,7 +37,6 @@ NS_IMPL_CYCLE_COLLECTING_ADDREF(nsJSInspector)
 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsJSInspector)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSInspector)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSInspector)
diff --git a/dom/animation/AnimationEffectReadOnly.cpp b/dom/animation/AnimationEffectReadOnly.cpp
index bf2e2197d..63d633c2f 100644
--- a/dom/animation/AnimationEffectReadOnly.cpp
+++ b/dom/animation/AnimationEffectReadOnly.cpp
@@ -23,7 +23,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AnimationEffectReadOnly)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument, mTiming, mAnimation)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(AnimationEffectReadOnly)
diff --git a/dom/animation/AnimationTimeline.cpp b/dom/animation/AnimationTimeline.cpp
index 643106807..f4a1ecc9a 100644
--- a/dom/animation/AnimationTimeline.cpp
+++ b/dom/animation/AnimationTimeline.cpp
@@ -21,7 +21,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AnimationTimeline)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow, mAnimations)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(AnimationTimeline)
diff --git a/dom/base/Attr.cpp b/dom/base/Attr.cpp
index 6eb3b49fd..71b559392 100644
--- a/dom/base/Attr.cpp
+++ b/dom/base/Attr.cpp
@@ -59,8 +59,6 @@ Attr::Attr(nsDOMAttributeMap *aAttrMap,
 NS_IMPL_CYCLE_COLLECTION_CLASS(Attr)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Attr)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
-
   if (!nsINode::Traverse(tmp, cb)) {
     return NS_SUCCESS_INTERRUPTED_TRAVERSE;
   }
diff --git a/dom/base/CustomElementRegistry.cpp b/dom/base/CustomElementRegistry.cpp
index 00ee3d42f..3f202d33b 100644
--- a/dom/base/CustomElementRegistry.cpp
+++ b/dom/base/CustomElementRegistry.cpp
@@ -138,7 +138,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CustomElementRegistry)
   }
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWhenDefinedPromiseMap)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CustomElementRegistry)
diff --git a/dom/base/DOMException.cpp b/dom/base/DOMException.cpp
index dfda47316..9fbb2f242 100644
--- a/dom/base/DOMException.cpp
+++ b/dom/base/DOMException.cpp
@@ -165,7 +165,6 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(Exception)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Exception)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocation)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mData)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Exception)
diff --git a/dom/base/DOMIntersectionObserver.cpp b/dom/base/DOMIntersectionObserver.cpp
index e671b7da9..389b93071 100644
--- a/dom/base/DOMIntersectionObserver.cpp
+++ b/dom/base/DOMIntersectionObserver.cpp
@@ -52,7 +52,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMIntersectionObserver)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMIntersectionObserver)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallback)
diff --git a/dom/base/File.cpp b/dom/base/File.cpp
index 7d86dfe8a..1d5ab73e7 100755
--- a/dom/base/File.cpp
+++ b/dom/base/File.cpp
@@ -138,7 +138,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Blob)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Blob)
diff --git a/dom/base/FormData.cpp b/dom/base/FormData.cpp
index 6095286be..52bdd9210 100644
--- a/dom/base/FormData.cpp
+++ b/dom/base/FormData.cpp
@@ -84,7 +84,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(FormData)
                                 "mFormData[i].GetAsBlob()", 0);
   }
 
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(FormData)
diff --git a/dom/base/FragmentOrElement.cpp b/dom/base/FragmentOrElement.cpp
index 13ba19c8c..9106778df 100644
--- a/dom/base/FragmentOrElement.cpp
+++ b/dom/base/FragmentOrElement.cpp
@@ -1878,10 +1878,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(FragmentOrElement)
     NS_IMPL_CYCLE_COLLECTION_DESCRIBE(FragmentOrElement, tmp->mRefCnt.get())
   }
 
-  // Always need to traverse script objects, so do that before we check
-  // if we're uncollectable.
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
-
   if (!nsINode::Traverse(tmp, cb)) {
     return NS_SUCCESS_INTERRUPTED_TRAVERSE;
   }
diff --git a/dom/base/Location.cpp b/dom/base/Location.cpp
index e312cffe0..3a39a9e66 100644
--- a/dom/base/Location.cpp
+++ b/dom/base/Location.cpp
@@ -80,7 +80,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Location)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInnerWindow)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(Location)
diff --git a/dom/base/Navigator.cpp b/dom/base/Navigator.cpp
index 286cd0e79..fdf151b6c 100644
--- a/dom/base/Navigator.cpp
+++ b/dom/base/Navigator.cpp
@@ -223,7 +223,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Navigator)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGamepadServiceTest)
 #endif
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mVRGetDisplaysPromises)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(Navigator)
diff --git a/dom/base/Pose.cpp b/dom/base/Pose.cpp
index 1eab4c173..5bc4ca6de 100644
--- a/dom/base/Pose.cpp
+++ b/dom/base/Pose.cpp
@@ -26,7 +26,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Pose)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Pose)
diff --git a/dom/base/ProcessGlobal.cpp b/dom/base/ProcessGlobal.cpp
index 641f49f98..6cd29ab7c 100644
--- a/dom/base/ProcessGlobal.cpp
+++ b/dom/base/ProcessGlobal.cpp
@@ -52,7 +52,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ProcessGlobal)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMessageManager)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
   tmp->TraverseHostObjectURIs(cb);
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ProcessGlobal)
diff --git a/dom/base/nsContentList.cpp b/dom/base/nsContentList.cpp
index 43e65777d..c98859ee3 100644
--- a/dom/base/nsContentList.cpp
+++ b/dom/base/nsContentList.cpp
@@ -54,7 +54,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsBaseContentList)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsBaseContentList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElements)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsBaseContentList)
 
diff --git a/dom/base/nsDOMAttributeMap.cpp b/dom/base/nsDOMAttributeMap.cpp
index 381f267cd..2a90df7e4 100644
--- a/dom/base/nsDOMAttributeMap.cpp
+++ b/dom/base/nsDOMAttributeMap.cpp
@@ -65,7 +65,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMAttributeMap)
   for (auto iter = tmp->mAttributeCache.Iter(); !iter.Done(); iter.Next()) {
     cb.NoteXPCOMChild(static_cast<nsINode*>(iter.Data().get()));
   }
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContent)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/base/nsDOMMutationObserver.cpp b/dom/base/nsDOMMutationObserver.cpp
index 024ce5e2e..858a30ce5 100644
--- a/dom/base/nsDOMMutationObserver.cpp
+++ b/dom/base/nsDOMMutationObserver.cpp
@@ -506,7 +506,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMMutationObserver)
   NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMMutationObserver)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mReceivers)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFirstPendingMutation)
diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index d4d488379..a6ed419df 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -1590,10 +1590,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsDocument)
     NS_IMPL_CYCLE_COLLECTION_DESCRIBE(nsDocument, tmp->mRefCnt.get())
   }
 
-  // Always need to traverse script objects, so do that before we check
-  // if we're uncollectable.
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
-
   if (!nsINode::Traverse(tmp, cb)) {
     return NS_SUCCESS_INTERRUPTED_TRAVERSE;
   }
diff --git a/dom/base/nsFrameMessageManager.cpp b/dom/base/nsFrameMessageManager.cpp
index f4c4ca0f1..bba4232aa 100644
--- a/dom/base/nsFrameMessageManager.cpp
+++ b/dom/base/nsFrameMessageManager.cpp
@@ -132,7 +132,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFrameMessageManager)
   }
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChildManagers)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParentManager)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsFrameMessageManager)
diff --git a/dom/base/nsGenericDOMDataNode.cpp b/dom/base/nsGenericDOMDataNode.cpp
index 9688588e0..0ae15e09e 100644
--- a/dom/base/nsGenericDOMDataNode.cpp
+++ b/dom/base/nsGenericDOMDataNode.cpp
@@ -98,10 +98,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsGenericDOMDataNode)
     NS_IMPL_CYCLE_COLLECTION_DESCRIBE(nsGenericDOMDataNode, tmp->mRefCnt.get())
   }
 
-  // Always need to traverse script objects, so do that before we check
-  // if we're uncollectable.
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
-
   if (!nsINode::Traverse(tmp, cb)) {
     return NS_SUCCESS_INTERRUPTED_TRAVERSE;
   }
diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index de2ebdefe..ac85e34c0 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -2284,7 +2284,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsGlobalWindow)
 
   tmp->TraverseHostObjectURIs(cb);
 
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsGlobalWindow)
diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp
index 4a984d294..3f28533d3 100644
--- a/dom/base/nsJSEnvironment.cpp
+++ b/dom/base/nsJSEnvironment.cpp
@@ -126,13 +126,13 @@ static const uint32_t kMaxICCDuration = 2000; // ms
 // Force a CC after this long if there's more than NS_CC_FORCED_PURPLE_LIMIT
 // objects in the purple buffer.
 #define NS_CC_FORCED                (2 * 60 * PR_USEC_PER_SEC) // 2 min
-#define NS_CC_FORCED_PURPLE_LIMIT   10
+#define NS_CC_FORCED_PURPLE_LIMIT   100
 
 // Don't allow an incremental GC to lock out the CC for too long.
 #define NS_MAX_CC_LOCKEDOUT_TIME    (30 * PR_USEC_PER_SEC) // 30 seconds
 
 // Trigger a CC if the purple buffer exceeds this size when we check it.
-#define NS_CC_PURPLE_LIMIT          200
+#define NS_CC_PURPLE_LIMIT          2000
 
 // Large value used to specify that a script should run essentially forever
 #define NS_UNLIMITED_SCRIPT_RUNTIME (0x40000000LL << 32)
@@ -625,7 +625,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSContext)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSContext)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobalObjectRef)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsJSContext)
@@ -1356,9 +1355,20 @@ nsJSContext::RunCycleCollectorSlice()
       TimeStamp now = TimeStamp::Now();
 
       // Only run a limited slice if we're within the max running time.
-      if (TimeBetween(gCCStats.mBeginTime, now) < kMaxICCDuration) {
-        float sliceMultiplier = std::max(TimeBetween(gCCStats.mEndSliceTime, now) / (float)kICCIntersliceDelay, 1.0f);
-        budget = js::SliceBudget(js::TimeBudget(kICCSliceBudget * sliceMultiplier));
+      uint32_t runningTime = TimeBetween(gCCStats.mBeginTime, now);
+      if (runningTime < kMaxICCDuration) {
+        // Try to make up for a delay in running this slice.
+        float sliceDelayMultiplier = TimeBetween(gCCStats.mEndSliceTime, now) / (float)kICCIntersliceDelay;
+        float delaySliceBudget = kICCSliceBudget * sliceDelayMultiplier;
+
+        // Increase slice budgets up to |maxLaterSlice| as we approach
+        // half way through the ICC, to avoid large sync CCs.
+        float percentToHalfDone = std::min(2.0f * runningTime / kMaxICCDuration, 1.0f);
+        const float maxLaterSlice = 40.0f;
+        float laterSliceBudget = maxLaterSlice * percentToHalfDone;
+
+        budget = js::SliceBudget(js::TimeBudget(std::max({delaySliceBudget,
+                  laterSliceBudget, (float)kICCSliceBudget})));
       }
     }
   }
@@ -2618,7 +2628,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSArgArray)
   tmp->ReleaseJSObjects();
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSArgArray)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsJSArgArray)
diff --git a/dom/base/nsJSTimeoutHandler.cpp b/dom/base/nsJSTimeoutHandler.cpp
index 8736cd1dd..ce5d58385 100644
--- a/dom/base/nsJSTimeoutHandler.cpp
+++ b/dom/base/nsJSTimeoutHandler.cpp
@@ -151,7 +151,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsJSScriptTimeoutHandler)
 
   if (tmp->mFunction) {
     NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFunction)
-    NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   }
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/base/nsRange.cpp b/dom/base/nsRange.cpp
index 4b4ce7885..d45a2c975 100644
--- a/dom/base/nsRange.cpp
+++ b/dom/base/nsRange.cpp
@@ -351,7 +351,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsRange)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEndParent)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRoot)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelection)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsRange)
diff --git a/dom/base/nsScriptLoader.cpp b/dom/base/nsScriptLoader.cpp
index 0eb5bbf31..1e23d6c5f 100644
--- a/dom/base/nsScriptLoader.cpp
+++ b/dom/base/nsScriptLoader.cpp
@@ -353,7 +353,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsModuleScript)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLoader)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsModuleScript)
diff --git a/dom/base/nsWrapperCache.cpp b/dom/base/nsWrapperCache.cpp
index b91d86598..c5993fe7b 100644
--- a/dom/base/nsWrapperCache.cpp
+++ b/dom/base/nsWrapperCache.cpp
@@ -133,7 +133,7 @@ nsWrapperCache::CheckCCWrapperTraversal(void* aScriptObjectHolder,
   // see through the COM layer, so we use a suppression to help it.
   JS::AutoSuppressGCAnalysis suppress;
 
-  aTracer->Traverse(aScriptObjectHolder, callback);
+  aTracer->TraverseNativeAndJS(aScriptObjectHolder, callback);
   MOZ_ASSERT(callback.mFound,
              "Cycle collection participant didn't traverse to preserved "
              "wrapper! This will probably crash.");
diff --git a/dom/base/nsWrapperCache.h b/dom/base/nsWrapperCache.h
index 3c69a7ec4..56cae89ed 100644
--- a/dom/base/nsWrapperCache.h
+++ b/dom/base/nsWrapperCache.h
@@ -331,8 +331,7 @@ private:
    * causes between the native object and the JS object, so it is important that
    * any native object that supports preserving of its wrapper
    * traces/traverses/unlinks the cached JS object (see
-   * NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER,
-   * NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS and
+   * NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER and
    * NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER).
    */
   enum { WRAPPER_BIT_PRESERVED = 1 << 0 };
@@ -383,7 +382,6 @@ NS_DEFINE_STATIC_IID_ACCESSOR(nsWrapperCache, NS_WRAPPERCACHE_IID)
     NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER   \
   NS_IMPL_CYCLE_COLLECTION_UNLINK_END                   \
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class)       \
-    NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS    \
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END                 \
   NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class)
 
@@ -395,7 +393,6 @@ NS_DEFINE_STATIC_IID_ACCESSOR(nsWrapperCache, NS_WRAPPERCACHE_IID)
   NS_IMPL_CYCLE_COLLECTION_UNLINK_END                      \
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_class)          \
     NS_IMPL_CYCLE_COLLECTION_TRAVERSE(__VA_ARGS__)         \
-    NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS       \
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END                    \
   NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(_class)
 
diff --git a/dom/bindings/CallbackObject.cpp b/dom/bindings/CallbackObject.cpp
index 7c7d2c6b4..bb01c804c 100644
--- a/dom/bindings/CallbackObject.cpp
+++ b/dom/bindings/CallbackObject.cpp
@@ -37,7 +37,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CallbackObject)
   NS_IMPL_CYCLE_COLLECTION_UNLINK(mIncumbentGlobal)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CallbackObject)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIncumbentGlobal)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CallbackObject)
diff --git a/dom/bindings/Codegen.py b/dom/bindings/Codegen.py
index 7a6668687..cb93e4897 100644
--- a/dom/bindings/Codegen.py
+++ b/dom/bindings/Codegen.py
@@ -14994,7 +14994,6 @@ class CGJSImplClass(CGBindingImplClass):
                 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(${ifaceName})
                   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mImpl)
                   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
-                  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
                 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
                 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(${ifaceName})
                 NS_IMPL_CYCLE_COLLECTING_ADDREF(${ifaceName})
diff --git a/dom/bindings/Exceptions.cpp b/dom/bindings/Exceptions.cpp
index a3f807688..8ace37051 100644
--- a/dom/bindings/Exceptions.cpp
+++ b/dom/bindings/Exceptions.cpp
@@ -305,7 +305,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(JSStackFrame)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCaller)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAsyncCaller)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(JSStackFrame)
   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mStack)
diff --git a/dom/bindings/SimpleGlobalObject.cpp b/dom/bindings/SimpleGlobalObject.cpp
index 6ac397019..88710f7d9 100644
--- a/dom/bindings/SimpleGlobalObject.cpp
+++ b/dom/bindings/SimpleGlobalObject.cpp
@@ -29,8 +29,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(SimpleGlobalObject)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(SimpleGlobalObject)
-
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   tmp->TraverseHostObjectURIs(cb);
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp
index e3406fc02..b60ab239d 100644
--- a/dom/canvas/CanvasRenderingContext2D.cpp
+++ b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -1047,7 +1047,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CanvasRenderingContext2D)
       ImplCycleCollectionTraverse(cb, info.mElement, "Hit region fallback element");
     }
   }
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(CanvasRenderingContext2D)
diff --git a/dom/canvas/ImageData.cpp b/dom/canvas/ImageData.cpp
index b201fa279..d24fbca95 100644
--- a/dom/canvas/ImageData.cpp
+++ b/dom/canvas/ImageData.cpp
@@ -29,7 +29,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ImageData)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ImageData)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ImageData)
diff --git a/dom/console/Console.cpp b/dom/console/Console.cpp
index ff5a92167..b174172e0 100755
--- a/dom/console/Console.cpp
+++ b/dom/console/Console.cpp
@@ -797,7 +797,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Console)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mConsoleEventNotifier)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Console)
diff --git a/dom/events/DOMEventTargetHelper.cpp b/dom/events/DOMEventTargetHelper.cpp
index f8a5227d6..dd9a01d8d 100644
--- a/dom/events/DOMEventTargetHelper.cpp
+++ b/dom/events/DOMEventTargetHelper.cpp
@@ -43,7 +43,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(DOMEventTargetHelper)
     NS_IMPL_CYCLE_COLLECTION_DESCRIBE(DOMEventTargetHelper, tmp->mRefCnt.get())
   }
 
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mListenerManager)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/events/DataTransfer.cpp b/dom/events/DataTransfer.cpp
index 45c72e662..40a0f42e6 100644
--- a/dom/events/DataTransfer.cpp
+++ b/dom/events/DataTransfer.cpp
@@ -57,7 +57,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DataTransfer)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mItems)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDragTarget)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDragImage)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(DataTransfer)
 
diff --git a/dom/events/Event.cpp b/dom/events/Event.cpp
index f33bfa5a8..280e40ad5 100755
--- a/dom/events/Event.cpp
+++ b/dom/events/Event.cpp
@@ -231,7 +231,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Event)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPresContext)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mExplicitOriginalTarget)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 
diff --git a/dom/events/JSEventHandler.cpp b/dom/events/JSEventHandler.cpp
index 4b1b33313..b9e7c4d84 100644
--- a/dom/events/JSEventHandler.cpp
+++ b/dom/events/JSEventHandler.cpp
@@ -63,7 +63,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(JSEventHandler)
     NS_IMPL_CYCLE_COLLECTION_DESCRIBE(JSEventHandler, tmp->mRefCnt.get())
   }
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mTypedHandler.Ptr())
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(JSEventHandler)
diff --git a/dom/filesystem/Directory.cpp b/dom/filesystem/Directory.cpp
index 59c78fb2c..5e8a4a745 100644
--- a/dom/filesystem/Directory.cpp
+++ b/dom/filesystem/Directory.cpp
@@ -36,7 +36,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Directory)
     tmp->mFileSystem->Traverse(cb);
   }
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(Directory)
diff --git a/dom/gamepad/GamepadServiceTest.cpp b/dom/gamepad/GamepadServiceTest.cpp
index a6fde58f0..89429b52a 100644
--- a/dom/gamepad/GamepadServiceTest.cpp
+++ b/dom/gamepad/GamepadServiceTest.cpp
@@ -35,7 +35,6 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(GamepadServiceTest)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(GamepadServiceTest,
                                                   DOMEventTargetHelper)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/html/HTMLFormControlsCollection.cpp b/dom/html/HTMLFormControlsCollection.cpp
index d91a6b5de..77fafae99 100644
--- a/dom/html/HTMLFormControlsCollection.cpp
+++ b/dom/html/HTMLFormControlsCollection.cpp
@@ -134,7 +134,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(HTMLFormControlsCollection)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(HTMLFormControlsCollection)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNameLookupTable)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(HTMLFormControlsCollection)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/html/nsDOMStringMap.cpp b/dom/html/nsDOMStringMap.cpp
index 42725bc6f..6d2bc424d 100644
--- a/dom/html/nsDOMStringMap.cpp
+++ b/dom/html/nsDOMStringMap.cpp
@@ -19,7 +19,6 @@ using namespace mozilla::dom;
 NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMStringMap)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMStringMap)
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElement)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/indexedDB/IDBCursor.cpp b/dom/indexedDB/IDBCursor.cpp
index 7ae35e981..af88742f0 100644
--- a/dom/indexedDB/IDBCursor.cpp
+++ b/dom/indexedDB/IDBCursor.cpp
@@ -948,7 +948,6 @@ NS_INTERFACE_MAP_END
 NS_IMPL_CYCLE_COLLECTION_CLASS(IDBCursor)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBCursor)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRequest)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceObjectStore)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceIndex)
diff --git a/dom/indexedDB/IDBFactory.cpp b/dom/indexedDB/IDBFactory.cpp
index 825d2ac36..c1ef6353d 100644
--- a/dom/indexedDB/IDBFactory.cpp
+++ b/dom/indexedDB/IDBFactory.cpp
@@ -865,7 +865,6 @@ NS_INTERFACE_MAP_END
 NS_IMPL_CYCLE_COLLECTION_CLASS(IDBFactory)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBFactory)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/indexedDB/IDBIndex.cpp b/dom/indexedDB/IDBIndex.cpp
index 657e744c9..af50926e6 100644
--- a/dom/indexedDB/IDBIndex.cpp
+++ b/dom/indexedDB/IDBIndex.cpp
@@ -652,7 +652,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBIndex)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBIndex)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mObjectStore)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/indexedDB/IDBKeyRange.cpp b/dom/indexedDB/IDBKeyRange.cpp
index 2de48a70c..e61c80617 100644
--- a/dom/indexedDB/IDBKeyRange.cpp
+++ b/dom/indexedDB/IDBKeyRange.cpp
@@ -239,7 +239,6 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(IDBKeyRange)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBKeyRange)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBKeyRange)
diff --git a/dom/indexedDB/IDBObjectStore.cpp b/dom/indexedDB/IDBObjectStore.cpp
index 8a0b292ad..756792741 100644
--- a/dom/indexedDB/IDBObjectStore.cpp
+++ b/dom/indexedDB/IDBObjectStore.cpp
@@ -1758,7 +1758,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBObjectStore)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBObjectStore)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTransaction)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIndexes)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDeletedIndexes)
diff --git a/dom/indexedDB/IDBRequest.cpp b/dom/indexedDB/IDBRequest.cpp
index 919d3adc7..e0e318059 100644
--- a/dom/indexedDB/IDBRequest.cpp
+++ b/dom/indexedDB/IDBRequest.cpp
@@ -417,8 +417,6 @@ IDBRequest::GetError(ErrorResult& aRv)
 NS_IMPL_CYCLE_COLLECTION_CLASS(IDBRequest)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBRequest, IDBWrapperCache)
-  // Don't need NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS because
-  // DOMEventTargetHelper does it for us.
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceAsObjectStore)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceAsIndex)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceAsCursor)
diff --git a/dom/indexedDB/IDBWrapperCache.cpp b/dom/indexedDB/IDBWrapperCache.cpp
index df62514c8..ccc2bb43e 100644
--- a/dom/indexedDB/IDBWrapperCache.cpp
+++ b/dom/indexedDB/IDBWrapperCache.cpp
@@ -18,8 +18,6 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(IDBWrapperCache)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBWrapperCache,
                                                   DOMEventTargetHelper)
-  // Don't need NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS because
-  // DOMEventTargetHelper does it for us.
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBWrapperCache,
diff --git a/dom/ipc/TabChild.cpp b/dom/ipc/TabChild.cpp
index 3fe94001e..e1355adee 100644
--- a/dom/ipc/TabChild.cpp
+++ b/dom/ipc/TabChild.cpp
@@ -176,7 +176,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(TabChildBase)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTabChildGlobal)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWebBrowserChrome)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/media/webaudio/AudioBuffer.cpp b/dom/media/webaudio/AudioBuffer.cpp
index cb834f6a5..e7eba2d48 100644
--- a/dom/media/webaudio/AudioBuffer.cpp
+++ b/dom/media/webaudio/AudioBuffer.cpp
@@ -27,7 +27,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AudioBuffer)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AudioBuffer)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(AudioBuffer)
diff --git a/dom/media/webaudio/AudioParam.cpp b/dom/media/webaudio/AudioParam.cpp
index 6f5574993..c1a874264 100644
--- a/dom/media/webaudio/AudioParam.cpp
+++ b/dom/media/webaudio/AudioParam.cpp
@@ -22,7 +22,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AudioParam)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AudioParam)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNode)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(AudioParam)
diff --git a/dom/media/webaudio/MediaBufferDecoder.cpp b/dom/media/webaudio/MediaBufferDecoder.cpp
index 2ee11eacd..f3b75ca1a 100644
--- a/dom/media/webaudio/MediaBufferDecoder.cpp
+++ b/dom/media/webaudio/MediaBufferDecoder.cpp
@@ -44,7 +44,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(WebAudioDecodeJob)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOutput)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSuccessCallback)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFailureCallback)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(WebAudioDecodeJob)
diff --git a/dom/media/webaudio/WaveShaperNode.cpp b/dom/media/webaudio/WaveShaperNode.cpp
index d5c617dcd..4c50f2f1d 100644
--- a/dom/media/webaudio/WaveShaperNode.cpp
+++ b/dom/media/webaudio/WaveShaperNode.cpp
@@ -23,7 +23,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(WaveShaperNode, AudioNode)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(WaveShaperNode, AudioNode)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(WaveShaperNode)
diff --git a/dom/network/TCPSocketChild.cpp b/dom/network/TCPSocketChild.cpp
index 8eb19a1db..72581ca9d 100644
--- a/dom/network/TCPSocketChild.cpp
+++ b/dom/network/TCPSocketChild.cpp
@@ -50,7 +50,6 @@ namespace dom {
 NS_IMPL_CYCLE_COLLECTION_CLASS(TCPSocketChildBase)
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(TCPSocketChildBase)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSocket)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/performance/PerformanceMainThread.cpp b/dom/performance/PerformanceMainThread.cpp
index 64c06d3ea..5a84f5fb1 100644
--- a/dom/performance/PerformanceMainThread.cpp
+++ b/dom/performance/PerformanceMainThread.cpp
@@ -27,7 +27,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PerformanceMainThread,
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTiming,
                                     mNavigation,
                                     mDocEntry)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceMainThread,
diff --git a/dom/performance/PerformanceObserver.cpp b/dom/performance/PerformanceObserver.cpp
index d02acfb09..7bf194bb7 100644
--- a/dom/performance/PerformanceObserver.cpp
+++ b/dom/performance/PerformanceObserver.cpp
@@ -34,7 +34,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(PerformanceObserver)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallback)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPerformance)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(PerformanceObserver)
 
diff --git a/dom/promise/Promise.cpp b/dom/promise/Promise.cpp
index 557f3a1f9..f636a9101 100644
--- a/dom/promise/Promise.cpp
+++ b/dom/promise/Promise.cpp
@@ -413,7 +413,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Promise)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResolveCallbacks)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRejectCallbacks)
 #endif // SPIDERMONKEY_PROMISE
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Promise)
@@ -1995,7 +1994,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CountdownHolder)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CountdownHolder)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPromise)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/dom/promise/PromiseCallback.cpp b/dom/promise/PromiseCallback.cpp
index 3f4a689ae..6ecf983b7 100644
--- a/dom/promise/PromiseCallback.cpp
+++ b/dom/promise/PromiseCallback.cpp
@@ -47,7 +47,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(ResolvePromiseCallback,
                                                   PromiseCallback)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPromise)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ResolvePromiseCallback)
@@ -107,7 +106,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(RejectPromiseCallback,
                                                   PromiseCallback)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPromise)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(RejectPromiseCallback)
@@ -170,7 +168,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(InvokePromiseFuncCallback,
                                                   PromiseCallback)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPromiseFunc)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(InvokePromiseFuncCallback)
@@ -256,7 +253,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(WrapperPromiseCallback,
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResolveFunc)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRejectFunc)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallback)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(WrapperPromiseCallback)
diff --git a/dom/push/PushSubscriptionOptions.cpp b/dom/push/PushSubscriptionOptions.cpp
index bc4fead1e..39252e9e8 100644
--- a/dom/push/PushSubscriptionOptions.cpp
+++ b/dom/push/PushSubscriptionOptions.cpp
@@ -36,7 +36,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(PushSubscriptionOptions)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(PushSubscriptionOptions)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(PushSubscriptionOptions)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/DOMSVGLength.cpp b/dom/svg/DOMSVGLength.cpp
index 574617045..c72c3e383 100644
--- a/dom/svg/DOMSVGLength.cpp
+++ b/dom/svg/DOMSVGLength.cpp
@@ -43,7 +43,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGLength)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSVGElement)
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGLength)
diff --git a/dom/svg/DOMSVGLengthList.cpp b/dom/svg/DOMSVGLengthList.cpp
index 9d93546d9..88ecd6007 100644
--- a/dom/svg/DOMSVGLengthList.cpp
+++ b/dom/svg/DOMSVGLengthList.cpp
@@ -55,7 +55,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGLengthList)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGLengthList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAList)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGLengthList)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/DOMSVGNumber.cpp b/dom/svg/DOMSVGNumber.cpp
index 97d80d4d0..6b9528606 100644
--- a/dom/svg/DOMSVGNumber.cpp
+++ b/dom/svg/DOMSVGNumber.cpp
@@ -35,7 +35,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGNumber)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGNumber)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/DOMSVGNumberList.cpp b/dom/svg/DOMSVGNumberList.cpp
index 00fb7ba4d..85322688f 100644
--- a/dom/svg/DOMSVGNumberList.cpp
+++ b/dom/svg/DOMSVGNumberList.cpp
@@ -55,7 +55,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGNumberList)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGNumberList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAList)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGNumberList)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/DOMSVGPathSeg.cpp b/dom/svg/DOMSVGPathSeg.cpp
index 95be3521e..a15bf42e9 100644
--- a/dom/svg/DOMSVGPathSeg.cpp
+++ b/dom/svg/DOMSVGPathSeg.cpp
@@ -31,7 +31,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGPathSeg)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGPathSeg)
diff --git a/dom/svg/DOMSVGPathSegList.cpp b/dom/svg/DOMSVGPathSegList.cpp
index 0b811cdb1..36768ea34 100644
--- a/dom/svg/DOMSVGPathSegList.cpp
+++ b/dom/svg/DOMSVGPathSegList.cpp
@@ -36,7 +36,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGPathSegList)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGPathSegList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElement)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGPathSegList)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/DOMSVGPointList.cpp b/dom/svg/DOMSVGPointList.cpp
index 966ef476e..ca06bd270 100644
--- a/dom/svg/DOMSVGPointList.cpp
+++ b/dom/svg/DOMSVGPointList.cpp
@@ -55,7 +55,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGPointList)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGPointList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElement)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGPointList)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/DOMSVGTransformList.cpp b/dom/svg/DOMSVGTransformList.cpp
index 30760bc6d..e4bde9aeb 100644
--- a/dom/svg/DOMSVGTransformList.cpp
+++ b/dom/svg/DOMSVGTransformList.cpp
@@ -54,7 +54,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGTransformList)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGTransformList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAList)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DOMSVGTransformList)
   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
diff --git a/dom/svg/SVGTransform.cpp b/dom/svg/SVGTransform.cpp
index b73018d1c..1cba997eb 100644
--- a/dom/svg/SVGTransform.cpp
+++ b/dom/svg/SVGTransform.cpp
@@ -51,7 +51,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
   SVGMatrix* matrix =
     SVGMatrixTearoffTable().GetTearoff(tmp);
   CycleCollectionNoteChild(cb, matrix, "matrix");
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(SVGTransform)
diff --git a/dom/svg/nsISVGPoint.cpp b/dom/svg/nsISVGPoint.cpp
index 1c1971004..f4fdb9dd0 100644
--- a/dom/svg/nsISVGPoint.cpp
+++ b/dom/svg/nsISVGPoint.cpp
@@ -32,7 +32,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsISVGPoint)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mList)
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsISVGPoint)
diff --git a/dom/svg/nsSVGElement.h b/dom/svg/nsSVGElement.h
index 42bc05746..257ed7a2e 100644
--- a/dom/svg/nsSVGElement.h
+++ b/dom/svg/nsSVGElement.h
@@ -715,7 +715,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER                            \
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END                                          \
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(_val)                                \
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(_element)                                \
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS                           \
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END                                        \
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(_val)                                   \
 NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER                             \
diff --git a/dom/worklet/WorkletGlobalScope.cpp b/dom/worklet/WorkletGlobalScope.cpp
index 4caeae81a..8c05a0abe 100644
--- a/dom/worklet/WorkletGlobalScope.cpp
+++ b/dom/worklet/WorkletGlobalScope.cpp
@@ -22,8 +22,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(WorkletGlobalScope)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(WorkletGlobalScope)
-
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mConsole)
   tmp->TraverseHostObjectURIs(cb);
diff --git a/dom/xbl/nsXBLDocumentInfo.cpp b/dom/xbl/nsXBLDocumentInfo.cpp
index 283775dc6..73b08d7e1 100644
--- a/dom/xbl/nsXBLDocumentInfo.cpp
+++ b/dom/xbl/nsXBLDocumentInfo.cpp
@@ -52,7 +52,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXBLDocumentInfo)
   if (tmp->mDocument &&
       nsCCUncollectableMarker::InGeneration(cb, tmp->mDocument->GetMarkedCCGeneration())) {
-    NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
     return NS_SUCCESS_INTERRUPTED_TRAVERSE;
   }
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument)
@@ -62,7 +61,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXBLDocumentInfo)
       iter.UserData()->Traverse(cb);
     }
   }
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsXBLDocumentInfo)
   if (tmp->mBindingTable) {
diff --git a/dom/xslt/xpath/XPathResult.cpp b/dom/xslt/xpath/XPathResult.cpp
index 33315c942..07121347e 100644
--- a/dom/xslt/xpath/XPathResult.cpp
+++ b/dom/xslt/xpath/XPathResult.cpp
@@ -63,7 +63,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(XPathResult)
     NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocument)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(XPathResult)
-    NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
     NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
     NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument)
     NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mResultNodes)
diff --git a/dom/xul/nsXULElement.cpp b/dom/xul/nsXULElement.cpp
index 14fa898ab..e351a46eb 100644
--- a/dom/xul/nsXULElement.cpp
+++ b/dom/xul/nsXULElement.cpp
@@ -2173,7 +2173,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXULPrototypeNode)
         }
         ImplCycleCollectionTraverse(cb, elem->mChildren, "mChildren");
     }
-    NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsXULPrototypeNode)
     if (tmp->mType == nsXULPrototypeNode::eType_Script) {
diff --git a/js/xpconnect/loader/mozJSSubScriptLoader.cpp b/js/xpconnect/loader/mozJSSubScriptLoader.cpp
index 9c8908ea4..f23e5833a 100644
--- a/js/xpconnect/loader/mozJSSubScriptLoader.cpp
+++ b/js/xpconnect/loader/mozJSSubScriptLoader.cpp
@@ -295,7 +295,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AsyncScriptLoader)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPromise)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(AsyncScriptLoader)
diff --git a/js/xpconnect/src/Sandbox.cpp b/js/xpconnect/src/Sandbox.cpp
index 120772ed2..a516cf73f 100644
--- a/js/xpconnect/src/Sandbox.cpp
+++ b/js/xpconnect/src/Sandbox.cpp
@@ -66,7 +66,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(SandboxPrivate)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(SandboxPrivate)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   tmp->TraverseHostObjectURIs(cb);
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
diff --git a/js/xpconnect/src/nsScriptErrorWithStack.cpp b/js/xpconnect/src/nsScriptErrorWithStack.cpp
index edc12fa76..50407da23 100644
--- a/js/xpconnect/src/nsScriptErrorWithStack.cpp
+++ b/js/xpconnect/src/nsScriptErrorWithStack.cpp
@@ -45,7 +45,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsScriptErrorWithStack)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsScriptErrorWithStack)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsScriptErrorWithStack)
diff --git a/layout/generic/nsSelection.cpp b/layout/generic/nsSelection.cpp
index ec0fba308..ff75ab85d 100644
--- a/layout/generic/nsSelection.cpp
+++ b/layout/generic/nsSelection.cpp
@@ -3544,7 +3544,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Selection)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAnchorFocusRange)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFrameSelection)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelectionListeners)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(Selection)
 
diff --git a/layout/style/FontFace.cpp b/layout/style/FontFace.cpp
index 4558ab1a2..ab6781149 100644
--- a/layout/style/FontFace.cpp
+++ b/layout/style/FontFace.cpp
@@ -75,7 +75,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(FontFace)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRule)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFontFaceSet)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOtherFontFaceSets)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(FontFace)
diff --git a/layout/style/MediaQueryList.cpp b/layout/style/MediaQueryList.cpp
index 069e049c4..db3781b76 100644
--- a/layout/style/MediaQueryList.cpp
+++ b/layout/style/MediaQueryList.cpp
@@ -39,7 +39,6 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(MediaQueryList)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(MediaQueryList)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocument)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallbacks)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(MediaQueryList)
diff --git a/layout/style/StyleRule.cpp b/layout/style/StyleRule.cpp
index 6aade8897..598cb7c74 100644
--- a/layout/style/StyleRule.cpp
+++ b/layout/style/StyleRule.cpp
@@ -1275,10 +1275,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMCSSStyleRule)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMCSSStyleRule)
-  // Just NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS here: that will call
-  // into our Trace hook, where we do the right thing with declarations
-  // already.
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMETHODIMP
diff --git a/layout/style/nsCSSRules.cpp b/layout/style/nsCSSRules.cpp
index a08d8af34..4b90b6f0c 100644
--- a/layout/style/nsCSSRules.cpp
+++ b/layout/style/nsCSSRules.cpp
@@ -1552,9 +1552,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsCSSFontFaceRule)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsCSSFontFaceRule)
-  // NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS will call into our
-  // Trace hook, where we do the right thing with declarations already.
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 // QueryInterface implementation for nsCSSFontFaceRule
diff --git a/layout/style/nsComputedDOMStyle.cpp b/layout/style/nsComputedDOMStyle.cpp
index 4f8d3edf6..6c846ed94 100644
--- a/layout/style/nsComputedDOMStyle.cpp
+++ b/layout/style/nsComputedDOMStyle.cpp
@@ -280,7 +280,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsComputedDOMStyle)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContent)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsComputedDOMStyle)
diff --git a/layout/style/nsROCSSPrimitiveValue.cpp b/layout/style/nsROCSSPrimitiveValue.cpp
index cbc715eb2..2721bd609 100644
--- a/layout/style/nsROCSSPrimitiveValue.cpp
+++ b/layout/style/nsROCSSPrimitiveValue.cpp
@@ -52,7 +52,6 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsROCSSPrimitiveValue)
   } else if (tmp->mType == CSS_RECT) {
     NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mRect)
   }
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsROCSSPrimitiveValue)
diff --git a/layout/xul/BoxObject.cpp b/layout/xul/BoxObject.cpp
index 6636a6d62..347205fff 100644
--- a/layout/xul/BoxObject.cpp
+++ b/layout/xul/BoxObject.cpp
@@ -53,7 +53,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(BoxObject)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(BoxObject)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
   if (tmp->mPropertyTable) {
     for (auto iter = tmp->mPropertyTable->Iter(); !iter.Done(); iter.Next()) {
       cb.NoteXPCOMChild(iter.UserData());
diff --git a/layout/xul/tree/nsTreeColumns.cpp b/layout/xul/tree/nsTreeColumns.cpp
index c6ee19342..ee8577f92 100644
--- a/layout/xul/tree/nsTreeColumns.cpp
+++ b/layout/xul/tree/nsTreeColumns.cpp
@@ -54,7 +54,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsTreeColumn)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContent)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNext)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsTreeColumn)
 
diff --git a/netwerk/base/nsUDPSocket.cpp b/netwerk/base/nsUDPSocket.cpp
index 06ecbf9ee..8b6a81bf5 100644
--- a/netwerk/base/nsUDPSocket.cpp
+++ b/netwerk/base/nsUDPSocket.cpp
@@ -172,7 +172,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsUDPMessage)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsUDPMessage)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsUDPMessage)
diff --git a/toolkit/components/osfile/NativeOSFileInternals.cpp b/toolkit/components/osfile/NativeOSFileInternals.cpp
index e4725d390..36517d9ec 100644
--- a/toolkit/components/osfile/NativeOSFileInternals.cpp
+++ b/toolkit/components/osfile/NativeOSFileInternals.cpp
@@ -232,7 +232,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(AbstractResult)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AbstractResult)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AbstractResult)
diff --git a/xpcom/base/nsCycleCollector.cpp b/xpcom/base/nsCycleCollector.cpp
index d6dc26954..06ed42326 100644
--- a/xpcom/base/nsCycleCollector.cpp
+++ b/xpcom/base/nsCycleCollector.cpp
@@ -2265,7 +2265,7 @@ CCGraphBuilder::BuildGraph(SliceBudget& aBudget)
     SetFirstChild();
 
     if (pi->mParticipant) {
-      nsresult rv = pi->mParticipant->Traverse(pi->mPointer, *this);
+      nsresult rv = pi->mParticipant->TraverseNativeAndJS(pi->mPointer, *this);
       MOZ_RELEASE_ASSERT(!NS_FAILED(rv), "Cycle collector Traverse method failed");
     }
 
@@ -2539,7 +2539,7 @@ static bool
 MayHaveChild(void* aObj, nsCycleCollectionParticipant* aCp)
 {
   ChildFinder cf;
-  aCp->Traverse(aObj, cf);
+  aCp->TraverseNativeAndJS(aObj, cf);
   return cf.MayHaveChild();
 }
 
@@ -2596,7 +2596,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(JSPurpleBuffer)
   CycleCollectionNoteChild(cb, tmp, "self");
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 #define NS_TRACE_SEGMENTED_ARRAY(_field, _type)                               \
diff --git a/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp b/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp
index 7c48002e3..f65a92e61 100644
--- a/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp
+++ b/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp
@@ -21,8 +21,9 @@ CycleCollectionNoteEdgeNameImpl(nsCycleCollectionTraversalCallback& aCallback,
 }
 
 void
-nsScriptObjectTracer::NoteJSChild(JS::GCCellPtr aGCThing, const char* aName,
-                                  void* aClosure)
+nsCycleCollectionParticipant::NoteJSChild(JS::GCCellPtr aGCThing,
+                                          const char* aName,
+                                          void* aClosure)
 {
   nsCycleCollectionTraversalCallback* cb =
     static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
diff --git a/xpcom/glue/nsCycleCollectionParticipant.h b/xpcom/glue/nsCycleCollectionParticipant.h
index 2dfbb6750..5d03acd26 100644
--- a/xpcom/glue/nsCycleCollectionParticipant.h
+++ b/xpcom/glue/nsCycleCollectionParticipant.h
@@ -113,11 +113,38 @@ private:
 class NS_NO_VTABLE nsCycleCollectionParticipant
 {
 public:
-  constexpr nsCycleCollectionParticipant() : mMightSkip(false) {}
-  constexpr explicit nsCycleCollectionParticipant(bool aSkip) : mMightSkip(aSkip) {}
+  constexpr nsCycleCollectionParticipant()
+    : mMightSkip(false)
+    , mTraverseShouldTrace(false)
+  {
+  }
+
+  constexpr explicit nsCycleCollectionParticipant(bool aSkip,
+                                                  bool aTraverseShouldTrace = false)
+    : mMightSkip(aSkip)
+    , mTraverseShouldTrace(aTraverseShouldTrace)
+  {
+  }
 
   NS_IMETHOD Traverse(void* aPtr, nsCycleCollectionTraversalCallback& aCb) = 0;
 
+  nsresult TraverseNativeAndJS(void* aPtr,
+                               nsCycleCollectionTraversalCallback& aCb)
+  {
+    nsresult rv = Traverse(aPtr, aCb);
+    if (mTraverseShouldTrace) {
+      // Note, we always call Trace, even if Traverse returned
+      // NS_SUCCESS_INTERRUPTED_TRAVERSE.
+      TraceCallbackFunc noteJsChild(&nsCycleCollectionParticipant::NoteJSChild);
+      Trace(aPtr, noteJsChild, &aCb);
+    }
+    return rv;
+  }
+
+    // Implemented in nsCycleCollectorTraceJSHelpers.cpp.
+  static void NoteJSChild(JS::GCCellPtr aGCThing, const char* aName,
+                          void* aClosure);
+
   NS_IMETHOD_(void) Root(void* aPtr) = 0;
   NS_IMETHOD_(void) Unlink(void* aPtr) = 0;
   NS_IMETHOD_(void) Unroot(void* aPtr) = 0;
@@ -172,26 +199,24 @@ protected:
 
 private:
   const bool mMightSkip;
+  const bool mTraverseShouldTrace;
 };
 
 class NS_NO_VTABLE nsScriptObjectTracer : public nsCycleCollectionParticipant
 {
 public:
   constexpr nsScriptObjectTracer()
-    : nsCycleCollectionParticipant(false)
+    : nsCycleCollectionParticipant(false, true)
   {
   }
   constexpr explicit nsScriptObjectTracer(bool aSkip)
-    : nsCycleCollectionParticipant(aSkip)
+    : nsCycleCollectionParticipant(aSkip, true)
   {
   }
 
   NS_IMETHOD_(void) Trace(void* aPtr, const TraceCallbacks& aCb,
                           void* aClosure) override = 0;
 
-  // Implemented in nsCycleCollectorTraceJSHelpers.cpp.
-  static void NoteJSChild(JS::GCCellPtr aGCThing, const char* aName,
-                          void* aClosure);
 };
 
 class NS_NO_VTABLE nsXPCOMCycleCollectionParticipant : public nsScriptObjectTracer
@@ -440,12 +465,6 @@ DowncastCCParticipant(void* aPtr)
 #define NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(_field)                       \
   CycleCollectionNoteChild(cb, tmp->_field, #_field);
 
-#define NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS                       \
-  {                                                                            \
-  TraceCallbackFunc noteJsChild(&nsScriptObjectTracer::NoteJSChild);           \
-  Trace(p, noteJsChild, &cb);                                                  \
-  }
-
 #define NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END                                  \
     (void)tmp;                                                                 \
     return NS_OK;                                                              \