RootLayerScrolling: fix PaintLayerClipperTest.

third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp b/third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp
index 65a57b663409e43ad82bb08d7b8a27a5f508e229..8cacaeb8a22e35606d0ceb6dbbf43f4b67da5ffa 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerClipperTest.cpp
@@ -27,6 +27,10 @@ TEST_F(PaintLayerClipperTest, LayoutSVGRoot) {
   PaintLayer* targetPaintLayer =
       toLayoutBoxModelObject(target->layoutObject())->layer();
   ClipRectsContext context(document().layoutView()->layer(), UncachedClipRects);
+  // When RLS is enabled, the LayoutView will have a composited scrolling layer,
+  // so don't apply an overflow clip.
+  if (RuntimeEnabledFeatures::rootLayerScrollingEnabled())
+    context.setIgnoreOverflowClip();
   LayoutRect layerBounds;
   ClipRect backgroundRect, foregroundRect;
   targetPaintLayer->clipper().calculateRects(