[LayoutNG] Implement atomic inlines for LayoutNGInline

third_party/WebKit/Source/core/layout/ng/ng_inline_node.h

Index: third_party/WebKit/Source/core/layout/ng/ng_inline_node.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_inline_node.h b/third_party/WebKit/Source/core/layout/ng/ng_inline_node.h
index b3cab22b1091c2147fcbceb3ae03c3f7efa2931f..cb2d0f1f6a5c2f303e66a2035af4369f5a83e6eb 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_inline_node.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_inline_node.h
@@ -137,11 +137,18 @@ class NGLayoutInlineItem {
   const ComputedStyle* Style() const { return style_; }
   LayoutObject* GetLayoutObject() const { return layout_object_; }
 
+  bool IsAtomicInlineLevel() const {
+    return layout_object_ && layout_object_->isAtomicInlineLevel();
+  }
+
   void SetEndOffset(unsigned);
 
   LayoutUnit InlineSize() const;
   LayoutUnit InlineSize(unsigned start, unsigned end) const;
 
+  // Layout this item. Only valid for IsAtomicInlineLevel() items.
+  RefPtr<NGLayoutResult> Layout(const NGConstraintSpace& parent_space) const;
+
   void GetFallbackFonts(HashSet<const SimpleFontData*>*,
                         unsigned start,
                         unsigned end) const;