Walk render tree instead of render layers for paint.

sky/engine/core/rendering/RenderParagraph.cpp

Index: sky/engine/core/rendering/RenderParagraph.cpp
diff --git a/sky/engine/core/rendering/RenderParagraph.cpp b/sky/engine/core/rendering/RenderParagraph.cpp
index 61bb7e33fd88c5472c9972538c0624e706670ef3..fd45b3c1a225b5c2ade9baa9d538cc11a16caf7e 100644
--- a/sky/engine/core/rendering/RenderParagraph.cpp
+++ b/sky/engine/core/rendering/RenderParagraph.cpp
@@ -172,9 +172,9 @@ void RenderParagraph::simplifiedNormalFlowLayout()
       }
 }
 
-void RenderParagraph::paintChildren(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
+void RenderParagraph::paintChildren(PaintInfo& paintInfo, const LayoutPoint& paintOffset, Vector<RenderBox*>& layers)
 {
-    m_lineBoxes.paint(this, paintInfo, paintOffset);
+    m_lineBoxes.paint(this, paintInfo, paintOffset, layers);
 }
 
 bool RenderParagraph::hitTestContents(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)