[SPv2] PaintArtifactorCompositor needs to set target_effect_id for root clip

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp

Index: third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp b/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
index 3661cdbab587baee013f0a6ca78b7cab5c659a02..702f2baed84229c3d2c13a1c1cd1dd6876a8a8c4 100644
--- a/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
+++ b/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
@@ -457,6 +457,7 @@ void PropertyTreeManager::setupRootClipNode() {
       gfx::SizeF(m_rootLayer->GetLayerTree()->device_viewport_size()));
   clipNode.transform_id = kRealRootNodeId;
   clipNode.target_transform_id = kRealRootNodeId;
+  clipNode.target_effect_id = kSecondaryRootNodeId;
 
   m_clipNodeMap.set(ClipPaintPropertyNode::root(), clipNode.id);
   m_rootLayer->SetClipTreeIndex(clipNode.id);