[LayoutNG] Compute baseline from fragment tree

third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc

Index: third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc b/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
index f50fa2c36bc1cae4a490f46ed9935f46e78d3123..68dcf1d9d2ef662ea15424579646ea9412cf7540 100644
--- a/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
+++ b/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
@@ -55,4 +55,17 @@ void LayoutNGBlockFlow::ResetNGInlineNodeData() {
   ng_inline_node_data_ = WTF::MakeUnique<NGInlineNodeData>();
 }
 
+int LayoutNGBlockFlow::FirstLineBoxBaseline() const {
+  // TODO(kojii): Implement. This will stop working once we stop creating line
+  // boxes.
+  return LayoutBlockFlow::FirstLineBoxBaseline();
+}
+
+int LayoutNGBlockFlow::InlineBlockBaseline(
+    LineDirectionMode line_direction) const {
+  // TODO(kojii): Implement. This will stop working once we stop creating line
+  // boxes.
+  return LayoutBlockFlow::InlineBlockBaseline(line_direction);
+}
+
 }  // namespace blink