Fix wrong box-shadow visual overflow with flipped blocks writing mode

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

Index: third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
diff --git a/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp b/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
index 6270c5476ec627376575d63bbfc22d7962703389..1fe2d7f53d7763d986ad716a38f9f8220158ce0c 100644
--- a/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
+++ b/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
@@ -286,11 +286,6 @@ LayoutRect PaintInvalidationState::computePaintInvalidationRectInBackingForSVG()
 
 static void slowMapToVisualRectInAncestorSpace(const LayoutObject& object, const LayoutBoxModelObject& ancestor, LayoutRect& rect)
 {
-    // TODO(crbug.com/597965): LayoutBox::mapToVisualRectInAncestorSpace() incorrectly flips a rect
-    // in its own space for writing mode. Here flip to workaround the flip.
-    if (object.isBox() && (toLayoutBox(object).isWritingModeRoot() || (ancestor == object && object.styleRef().isFlippedBlocksWritingMode())))
-        toLayoutBox(object).flipForWritingMode(rect);
-
     if (object.isLayoutView()) {
         toLayoutView(object).mapToVisualRectInAncestorSpace(&ancestor, rect, InputIsInFrameCoordinates, DefaultVisualRectFlags);
     } else if (object.isSVGRoot()) {