Timeline: add reference to root node of layer in Rasterize event

Source/core/inspector/TimelineRecordFactory.cpp

Index: Source/core/inspector/TimelineRecordFactory.cpp
diff --git a/Source/core/inspector/TimelineRecordFactory.cpp b/Source/core/inspector/TimelineRecordFactory.cpp
index 2343cfb6d7135da9cb52120f47d589f51aae7200..78b8f6e519e8213d93d6bb9f86b2b5128f9906b7 100644
--- a/Source/core/inspector/TimelineRecordFactory.cpp
+++ b/Source/core/inspector/TimelineRecordFactory.cpp
@@ -234,7 +234,7 @@ static PassRefPtr<InspectorArray> createQuad(const FloatQuad& quad)
     return array.release();
 }
 
-PassRefPtr<InspectorObject> TimelineRecordFactory::createPaintData(const FloatQuad& quad, int layerRootNodeId)
+PassRefPtr<InspectorObject> TimelineRecordFactory::createPaintData(const FloatQuad& quad, long long layerRootNodeId)
 {
     RefPtr<InspectorObject> data = InspectorObject::create();
     data->setArray("clip", createQuad(quad));
@@ -243,7 +243,15 @@ PassRefPtr<InspectorObject> TimelineRecordFactory::createPaintData(const FloatQu
     return data.release();
 }
 
-void TimelineRecordFactory::appendLayoutRoot(InspectorObject* data, const FloatQuad& quad, int rootNodeId)
+PassRefPtr<InspectorObject> TimelineRecordFactory::createRasterizeData(long long layerRootNodeId)
+{
+    RefPtr<InspectorObject> data = InspectorObject::create();
+    if (layerRootNodeId)
+        data->setNumber("layerRootNode", layerRootNodeId);
+    return data.release();
+}
+
+void TimelineRecordFactory::appendLayoutRoot(InspectorObject* data, const FloatQuad& quad, long long rootNodeId)
 {
     data->setArray("root", createQuad(quad));
     if (rootNodeId)