Schedule cursor update on URL cursor image loaded

third_party/WebKit/Source/core/layout/LayoutObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.cpp b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
index c2580420c02f4c091e01ae0b105f340926273b41..4d57d3685eb65a00655bbb01586901599690f3e2 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
@@ -1893,6 +1893,7 @@ void LayoutObject::setStyle(PassRefPtr<ComputedStyle> style)
     updateImage(oldBoxReflectMaskImage, newBoxReflectMaskImage);
 
     updateShapeImage(oldStyle ? oldStyle->shapeOutside() : 0, m_style->shapeOutside());
+    updateCursorImages(oldStyle ? oldStyle->cursors() : nullptr, m_style->cursors());
 
     bool doesNotNeedLayoutOrPaintInvalidation = !m_parent;
 
@@ -2117,6 +2118,20 @@ void LayoutObject::updateFillImages(const FillLayer* oldLayers, const FillLayer&
     }
 }
 
+void LayoutObject::updateCursorImages(const CursorList* oldCursors, const CursorList* newCursors)
+{
+    if (oldCursors && newCursors && *oldCursors == *newCursors)
+        return;
+
+    if (newCursors) {
+        for (const CursorData& cursorNew : *newCursors) {
+            if (cursorNew.image())
+                cursorNew.image()->addClient(this);
+        }
+    }
+    removeCursorImageClient(oldCursors);
+}
+
 void LayoutObject::updateImage(StyleImage* oldImage, StyleImage* newImage)
 {
     if (oldImage != newImage) {
@@ -2646,6 +2661,7 @@ void LayoutObject::willBeDestroyed()
             m_style->boxReflect()->mask().image()->removeClient(this);
 
         removeShapeImageClient(m_style->shapeOutside());
+        removeCursorImageClient(m_style->cursors());
     }
 
     if (frameView())
@@ -2831,6 +2847,16 @@ void LayoutObject::removeShapeImageClient(ShapeValue* shapeValue)
         shapeImage->removeClient(this);
 }
 
+void LayoutObject::removeCursorImageClient(const CursorList* cursorList)
+{
+    if (!cursorList)
+        return;
+    for (const CursorData& cursor : *cursorList) {
+        if (cursor.image())
+            cursor.image()->removeClient(this);
+    }
+}
+
 PositionWithAffinity LayoutObject::positionForPoint(const LayoutPoint&)
 {
     return createPositionWithAffinity(caretMinOffset());