Optimize scroll adjustment for paint invalidation

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 f1a02b92ae994f4d8b3b39d222de81e8fa5572c3..36b07e7fad47ae3f937998d0f4516f2553ed5626 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
@@ -1112,21 +1112,6 @@ bool LayoutObject::compositedScrollsWithRespectTo(
          this != &paintInvalidationContainer;
 }
 
-IntSize LayoutObject::scrollAdjustmentForPaintInvalidation(
-    const LayoutBoxModelObject& paintInvalidationContainer) const {
-  // Non-composited scrolling should be included in the bounds of scrolled
-  // items. Since mapToVisualRectInAncestorSpace does not include scrolling of
-  // the ancestor, we need to add it back in after.
-  if (paintInvalidationContainer.isBox() &&
-      !paintInvalidationContainer.usesCompositedScrolling() &&
-      this != &paintInvalidationContainer) {
-    const LayoutBox* box = toLayoutBox(&paintInvalidationContainer);
-    if (box->hasOverflowClip())
-      return -box->scrolledContentOffset();
-  }
-  return IntSize();
-}
-
 LayoutRect LayoutObject::invalidatePaintRectangle(
     const LayoutRect& dirtyRect,
     DisplayItemClient* displayItemClient) const {