Don't cache subsequence whose layer is not fully contained by repaint rect

Source/core/paint/DeprecatedPaintLayerReflectionInfo.cpp

Index: Source/core/paint/DeprecatedPaintLayerReflectionInfo.cpp
diff --git a/Source/core/paint/DeprecatedPaintLayerReflectionInfo.cpp b/Source/core/paint/DeprecatedPaintLayerReflectionInfo.cpp
index 629f837897ad5c4c2957334d0c57fe801573ec56..1333cc37f7d4cad65595f77f6f775043eaf6290a 100644
--- a/Source/core/paint/DeprecatedPaintLayerReflectionInfo.cpp
+++ b/Source/core/paint/DeprecatedPaintLayerReflectionInfo.cpp
@@ -129,15 +129,16 @@ void DeprecatedPaintLayerReflectionInfo::updateAfterStyleChange(const ComputedSt
     m_reflection->setStyle(newStyle.release());
 }
 
-void DeprecatedPaintLayerReflectionInfo::paint(GraphicsContext* context, const DeprecatedPaintLayerPaintingInfo& paintingInfo, PaintLayerFlags flags)
+DeprecatedPaintLayerPainter::PaintResult DeprecatedPaintLayerReflectionInfo::paint(GraphicsContext* context, const DeprecatedPaintLayerPaintingInfo& paintingInfo, PaintLayerFlags flags)
 {
     if (m_isPaintingInsideReflection)
-        return;
+        return DeprecatedPaintLayerPainter::FullyPainted;
 
     // Mark that we are now inside replica painting.
     m_isPaintingInsideReflection = true;
-    DeprecatedPaintLayerPainter(*reflectionLayer()).paintLayer(context, paintingInfo, flags);
+    DeprecatedPaintLayerPainter::PaintResult result = DeprecatedPaintLayerPainter(*reflectionLayer()).paintLayer(context, paintingInfo, flags);
     m_isPaintingInsideReflection = false;
+    return result;
 }
 
 } // namespace blink