Devirtualize LayoutBlock::firstLineBlock()

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

Index: third_party/WebKit/Source/core/layout/LayoutBlock.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.h b/third_party/WebKit/Source/core/layout/LayoutBlock.h
index 358dcff2e53d2618b0d548794074594931924f10..ad442524c55389d11ec8c213b3e0033051580e30 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.h
@@ -276,6 +276,9 @@ public:
     bool recalcChildOverflowAfterStyleChange();
     bool recalcOverflowAfterStyleChange();
 
+    // Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline children.
+    LayoutBlock* firstLineBlock() const;
+
     void invalidateDisplayItemClientsOfFirstLine();
 
 protected:
@@ -398,10 +401,6 @@ private:
 
     void computeBlockPreferredLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const;
 
-    // Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline
-    // children.
-    LayoutBlock* firstLineBlock() const override;
-
     LayoutObject* hoverAncestor() const final;
     void updateDragState(bool dragOn) final;
     void childBecameNonInline(LayoutObject* child) final;