--- a/layout/style/ServoBindings.cpp
+++ b/layout/style/ServoBindings.cpp
@@ -716,42 +716,52 @@ Gecko_SetNullImageValue(nsStyleImage* aI
 
 void
 Gecko_SetGradientImageValue(nsStyleImage* aImage, nsStyleGradient* aGradient)
 {
   MOZ_ASSERT(aImage);
   aImage->SetGradientData(aGradient);
 }
 
-void
-Gecko_SetUrlImageValue(nsStyleImage* aImage,
-                       const uint8_t* aURLString, uint32_t aURLStringLength,
-                       ThreadSafeURIHolder* aBaseURI,
-                       ThreadSafeURIHolder* aReferrer,
-                       ThreadSafePrincipalHolder* aPrincipal)
+static already_AddRefed<nsStyleImageRequest>
+CreateStyleImageRequest(nsStyleImageRequest::Mode aModeFlags,
+                        const uint8_t* aURLString, uint32_t aURLStringLength,
+                        ThreadSafeURIHolder* aBaseURI,
+                        ThreadSafeURIHolder* aReferrer,
+                        ThreadSafePrincipalHolder* aPrincipal)
 {
-  MOZ_ASSERT(aImage);
   MOZ_ASSERT(aURLString);
   MOZ_ASSERT(aBaseURI);
   MOZ_ASSERT(aReferrer);
   MOZ_ASSERT(aPrincipal);
 
   nsString url;
   nsDependentCSubstring urlString(reinterpret_cast<const char*>(aURLString),
                                   aURLStringLength);
   AppendUTF8toUTF16(urlString, url);
   RefPtr<nsStringBuffer> urlBuffer = nsCSSValue::BufferFromString(url);
 
   RefPtr<nsStyleImageRequest> req =
-    new nsStyleImageRequest(nsStyleImageRequest::Mode::Track |
+    new nsStyleImageRequest(aModeFlags, urlBuffer, do_AddRef(aBaseURI),
+                            do_AddRef(aReferrer), do_AddRef(aPrincipal));
+  return req.forget();
+}
+
+void
+Gecko_SetUrlImageValue(nsStyleImage* aImage,
+                       const uint8_t* aURLString, uint32_t aURLStringLength,
+                       ThreadSafeURIHolder* aBaseURI,
+                       ThreadSafeURIHolder* aReferrer,
+                       ThreadSafePrincipalHolder* aPrincipal)
+{
+  RefPtr<nsStyleImageRequest> req =
+    CreateStyleImageRequest(nsStyleImageRequest::Mode::Track |
                             nsStyleImageRequest::Mode::Lock,
-                            urlBuffer,
-                            do_AddRef(aBaseURI),
-                            do_AddRef(aReferrer),
-                            do_AddRef(aPrincipal));
+                            aURLString, aURLStringLength,
+                            aBaseURI, aReferrer, aPrincipal);
   aImage->SetImageRequest(req.forget());
 }
 
 void
 Gecko_CopyImageValueFrom(nsStyleImage* aImage, const nsStyleImage* aOther)
 {
   MOZ_ASSERT(aImage);
   MOZ_ASSERT(aOther);
@@ -787,16 +797,42 @@ Gecko_CreateGradient(uint8_t aShape,
   for (uint32_t i = 0; i < aStopCount; i++) {
     result->mStops.AppendElement(dummyStop);
   }
 
   return result;
 }
 
 void
+Gecko_SetListStyleImageNone(nsStyleList* aList)
+{
+  aList->mListStyleImage = nullptr;
+}
+
+void
+Gecko_SetListStyleImage(nsStyleList* aList,
+                        const uint8_t* aURLString, uint32_t aURLStringLength,
+                        ThreadSafeURIHolder* aBaseURI,
+                        ThreadSafeURIHolder* aReferrer,
+                        ThreadSafePrincipalHolder* aPrincipal)
+{
+  aList->mListStyleImage =
+    CreateStyleImageRequest(nsStyleImageRequest::Mode::Track |
+                            nsStyleImageRequest::Mode::Lock,
+                            aURLString, aURLStringLength,
+                            aBaseURI, aReferrer, aPrincipal);
+}
+
+void
+Gecko_CopyListStyleImageFrom(nsStyleList* aList, const nsStyleList* aSource)
+{
+  aList->mListStyleImage = aSource->mListStyleImage;
+}
+
+void
 Gecko_EnsureTArrayCapacity(void* aArray, size_t aCapacity, size_t aElemSize)
 {
   auto base =
     reinterpret_cast<nsTArray_base<nsTArrayInfallibleAllocator,
                                    nsTArray_CopyWithMemutils>*>(aArray);
 
   base->EnsureCapacity<nsTArrayInfallibleAllocator>(aCapacity, aElemSize);
 }

--- a/layout/style/ServoBindings.h
+++ b/layout/style/ServoBindings.h
@@ -258,16 +258,25 @@ void Gecko_SetUrlImageValue(nsStyleImage
 void Gecko_CopyImageValueFrom(nsStyleImage* image, const nsStyleImage* other);
 
 nsStyleGradient* Gecko_CreateGradient(uint8_t shape,
                                       uint8_t size,
                                       bool repeating,
                                       bool legacy_syntax,
                                       uint32_t stops);
 
+// list-style-image style.
+void Gecko_SetListStyleImageNone(nsStyleList* style_struct);
+void Gecko_SetListStyleImage(nsStyleList* style_struct,
+                             const uint8_t* string_bytes, uint32_t string_length,
+                             ThreadSafeURIHolder* base_uri,
+                             ThreadSafeURIHolder* referrer,
+                             ThreadSafePrincipalHolder* principal);
+void Gecko_CopyListStyleImageFrom(nsStyleList* dest, const nsStyleList* src);
+
 // Display style.
 void Gecko_SetMozBinding(nsStyleDisplay* style_struct,
                          const uint8_t* string_bytes, uint32_t string_length,
                          ThreadSafeURIHolder* base_uri,
                          ThreadSafeURIHolder* referrer,
                          ThreadSafePrincipalHolder* principal);
 void Gecko_CopyMozBindingFrom(nsStyleDisplay* des, const nsStyleDisplay* src);