Add static root property tree nodes [spv2]

third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h

Index: third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
index a036b0fd9b483f3c425062e16b07a4a6ad8ae462..e23b396ed39ec5f05e9595aa9fe9a14cb907a8ea 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
+++ b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
@@ -76,7 +76,7 @@ struct PaintPropertyTreeBuilderContext {
 // It expects to be invoked for each layout tree node in DOM order during InPrePaint phase.
 class PaintPropertyTreeBuilder {
 public:
-    void buildTreeRootNodes(FrameView&, PaintPropertyTreeBuilderContext&);
+    PaintPropertyTreeBuilderContext setupInitialContext();
     void buildTreeNodes(FrameView&, PaintPropertyTreeBuilderContext&);
     void buildTreeNodesForSelf(const LayoutObject&, PaintPropertyTreeBuilderContext&);
     void buildTreeNodesForChildren(const LayoutObject&, PaintPropertyTreeBuilderContext&);