Fix LayoutObject::mapToVisibleRectInContainerSpace()

third_party/WebKit/Source/core/layout/LayoutBox.h

Index: third_party/WebKit/Source/core/layout/LayoutBox.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.h b/third_party/WebKit/Source/core/layout/LayoutBox.h
index a2298303ab0935f59a3fc102f197f4dcc22d8a79..5a4388ad9ba78e3583445e68a0bb8705f33090b9 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.h
@@ -798,8 +798,11 @@ public:
     virtual void computeIntrinsicRatioInformation(FloatSize& /* intrinsicSize */, double& /* intrinsicRatio */) const { }
 
     IntSize scrolledContentOffset() const;
-    void applyCachedScrollOffsetForPaintInvalidation(LayoutRect& paintRect) const;
-    void applyCachedClipAndScrollOffsetForPaintInvalidation(LayoutRect& paintRect) const;
+
+    // Precondition: this object has overflow clip.
+    // Applies scroll offset to map the rect from scrolling contents space to the space of this object.
+    // If this object is not a paint invalidation container, overflow clip is also applied.
+    void applyOverflowClipAndScrollOffsetForPaintInvalidationIfNeeded(LayoutRect&) const;
 
     virtual bool hasRelativeLogicalWidth() const;
     virtual bool hasRelativeLogicalHeight() const;