[LayoutNG] Abort a layout once the BFC offset is resolved.

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

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
index a7c614d2967c09c4e08195a67a7a17b05a62900c..90683dda5fb3b90b8a402e7e313ed0f371283603 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
@@ -408,6 +408,10 @@ class CORE_EXPORT LayoutBlockFlow : public LayoutBlock {
     is_self_collapsing_ = CheckIfIsSelfCollapsingBlock();
   }
 
+  // This function is only public so we can call it from NGBlockNode while we're
+  // still working on LayoutNG.
+  void AddOverflowFromFloats();
+
 #ifndef NDEBUG
   void ShowLineTreeAndMark(const InlineBox* = nullptr,
                            const char* = nullptr,
@@ -431,8 +435,6 @@ class CORE_EXPORT LayoutBlockFlow : public LayoutBlock {
   void UpdateBlockChildDirtyBitsBeforeLayout(bool relayout_children,
                                              LayoutBox&);
 
-  void AddOverflowFromFloats();
-
   void ComputeSelfHitTestRects(Vector<LayoutRect>&,
                                const LayoutPoint& layer_offset) const override;