Move scroll paint property nodes to be owned by the transform tree

third_party/WebKit/Source/platform/testing/TestPaintArtifact.cpp

Index: third_party/WebKit/Source/platform/testing/TestPaintArtifact.cpp
diff --git a/third_party/WebKit/Source/platform/testing/TestPaintArtifact.cpp b/third_party/WebKit/Source/platform/testing/TestPaintArtifact.cpp
index e2d169998709b0b5e22d7f14f8651a6d8344a095..ca98c01cba6f375b24ba9080be2c74d65532d3fa 100644
--- a/third_party/WebKit/Source/platform/testing/TestPaintArtifact.cpp
+++ b/third_party/WebKit/Source/platform/testing/TestPaintArtifact.cpp
@@ -48,12 +48,11 @@ TestPaintArtifact::TestPaintArtifact() : m_displayItemList(0), m_built(false) {}
 TestPaintArtifact::~TestPaintArtifact() {}
 
 TestPaintArtifact& TestPaintArtifact::chunk(
-    PassRefPtr<TransformPaintPropertyNode> transform,
-    PassRefPtr<ClipPaintPropertyNode> clip,
-    PassRefPtr<EffectPaintPropertyNode> effect,
-    PassRefPtr<ScrollPaintPropertyNode> scroll) {
-  PropertyTreeState propertyTreeState(transform.get(), clip.get(), effect.get(),
-                                      scroll.get());
+    PassRefPtr<const TransformPaintPropertyNode> transform,
+    PassRefPtr<const ClipPaintPropertyNode> clip,
+    PassRefPtr<const EffectPaintPropertyNode> effect) {
+  PropertyTreeState propertyTreeState(transform.get(), clip.get(),
+                                      effect.get());
   PaintChunkProperties properties(propertyTreeState);
   return chunk(properties);
 }