Invalidate paint properties on paint offset changes

third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp

Index: third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
index 8794b9f888d6e890ee13c714dc8fc5eb1d361005..a0a17d3962ef13e7d138575fc7b25be600a0f5ca 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
@@ -796,14 +796,13 @@ static void overrideContaineringBlockContextFromRealContainingBlock(
   context.scroll = properties->propertyTreeState.scroll();
 }
 
-static void deriveBorderBoxFromContainerContext(
+void PaintPropertyTreeBuilder::updateContextForBoxPosition(
     const LayoutObject& object,
     PaintPropertyTreeBuilderContext& context) {
   if (!object.isBoxModelObject())
     return;
 
   const LayoutBoxModelObject& boxModelObject = toLayoutBoxModelObject(object);
-
   switch (object.styleRef().position()) {
     case StaticPosition:
       break;
@@ -889,8 +888,6 @@ void PaintPropertyTreeBuilder::updatePropertiesForSelf(
   FindObjectPropertiesNeedingUpdateScope checkNeedsUpdateScope(object, context);
 #endif
 
-  deriveBorderBoxFromContainerContext(object, context);
-
   updatePaintOffsetTranslation(object, context);
   updateTransform(object, context);
   updateEffect(object, context);