Add GraphicsLayerDebugInfo::includesNewPaintInvalidation to distinguish paint from new RenderObjects

Source/platform/graphics/GraphicsLayer.cpp

Index: Source/platform/graphics/GraphicsLayer.cpp
diff --git a/Source/platform/graphics/GraphicsLayer.cpp b/Source/platform/graphics/GraphicsLayer.cpp
index 649ab82e2683b5da128a9af3a5715149d0b009f5..50c3e0be8bf0e6bd17f77099a3e12b085181def1 100644
--- a/Source/platform/graphics/GraphicsLayer.cpp
+++ b/Source/platform/graphics/GraphicsLayer.cpp
@@ -907,6 +907,19 @@ void GraphicsLayer::setNeedsDisplayInRect(const FloatRect& rect)
     }
 }
 
+void GraphicsLayer::setIncludesFirstPaintInvalidation()
+{
+    m_debugInfo.setIncludesFirstPaintInvalidation(true);
+}
+
+void GraphicsLayer::resetIncludesFirstPaintInvalidationRecursive()
+{
+    m_debugInfo.setIncludesFirstPaintInvalidation(false);
+
+    for (size_t i = 0; i < m_children.size(); ++i)
+        m_children[i]->resetIncludesFirstPaintInvalidationRecursive();
+}
+
 void GraphicsLayer::setContentsRect(const IntRect& rect)
 {
     if (rect == m_contentsRect)