1 files changed, 10 insertions, 3 deletions
diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index f3e492589..293e48eb0 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -12610,8 +12610,12 @@ MarkDocumentTreeToBeInSyncOperation(nsIDocument* aDoc, void* aData)
 
 nsAutoSyncOperation::nsAutoSyncOperation(nsIDocument* aDoc)
 {
-  mMicroTaskLevel = nsContentUtils::MicroTaskLevel();
-  nsContentUtils::SetMicroTaskLevel(0);
+  mMicroTaskLevel = 0;
+  CycleCollectedJSContext* ccjs = CycleCollectedJSContext::Get();
+  if (ccjs) {
+    mMicroTaskLevel = ccjs->MicroTaskLevel();
+    ccjs->SetMicroTaskLevel(0);
+  }
   if (aDoc) {
     if (nsPIDOMWindowOuter* win = aDoc->GetWindow()) {
       if (nsCOMPtr<nsPIDOMWindowOuter> top = win->GetTop()) {
@@ -12627,7 +12631,10 @@ nsAutoSyncOperation::~nsAutoSyncOperation()
   for (int32_t i = 0; i < mDocuments.Count(); ++i) {
     mDocuments[i]->SetIsInSyncOperation(false);
   }
-  nsContentUtils::SetMicroTaskLevel(mMicroTaskLevel);
+  CycleCollectedJSContext* ccjs = CycleCollectedJSContext::Get();
+  if (ccjs) {
+    ccjs->SetMicroTaskLevel(mMicroTaskLevel);
+  }
 }
 
 gfxUserFontSet*