Avoid double layout for writing mode roots if LayoutNG is enabled

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 9fca55f4f81012ca7107e2c2842cefaaf4385a0d..32bd73fe5fbc9959f402645927cdb52e5ad62df4 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -1092,7 +1092,8 @@ void FrameView::performLayout(bool inSubtreeLayout) {
     }
     m_layoutSubtreeRootList.clear();
   } else {
-    if (hasOrthogonalWritingModeRoots())
+    if (hasOrthogonalWritingModeRoots() &&
+        !RuntimeEnabledFeatures::layoutNGEnabled())
       layoutOrthogonalWritingModeRoots();
     layoutFromRootObject(*layoutView());
   }