Use the baseline information exposed by C++ to pipe baseline data through RenderBox.

sky/engine/core/rendering/RenderBlock.cpp

Index: sky/engine/core/rendering/RenderBlock.cpp
diff --git a/sky/engine/core/rendering/RenderBlock.cpp b/sky/engine/core/rendering/RenderBlock.cpp
index af07da2b312c2e7d3f323fd4ba0916d9a1e099ef..6ef8a12eeae6679544b10fd137d116534c426d5e 100644
--- a/sky/engine/core/rendering/RenderBlock.cpp
+++ b/sky/engine/core/rendering/RenderBlock.cpp
@@ -1351,11 +1351,11 @@ LayoutUnit RenderBlock::minLineHeightForReplacedRenderer(bool isFirstLine, Layou
     return std::max<LayoutUnit>(replacedHeight, lineHeight(isFirstLine, HorizontalLine, PositionOfInteriorLineBoxes));
 }
 
-int RenderBlock::firstLineBoxBaseline() const
+int RenderBlock::firstLineBoxBaseline(bool autoBaseline, FontBaseline baselineType) const
 {
     for (RenderBox* curr = firstChildBox(); curr; curr = curr->nextSiblingBox()) {
         if (!curr->isFloatingOrOutOfFlowPositioned()) {
-            int result = curr->firstLineBoxBaseline();
+            int result = curr->firstLineBoxBaseline(autoBaseline, baselineType);
             if (result != -1)
                 return curr->logicalTop() + result; // Translate to our coordinate space.
         }