Timeline: do not rely on UpdateLayer & PaintLayer trace events

Source/core/inspector/InspectorInstrumentation.cpp

Index: Source/core/inspector/InspectorInstrumentation.cpp
diff --git a/Source/core/inspector/InspectorInstrumentation.cpp b/Source/core/inspector/InspectorInstrumentation.cpp
index b709868b1df9f60ec16b2f2b7de98a0321cfb85c..3a1fdc9dec600940111a31d569f36330cecc1fdb 100644
--- a/Source/core/inspector/InspectorInstrumentation.cpp
+++ b/Source/core/inspector/InspectorInstrumentation.cpp
@@ -237,18 +237,15 @@ InstrumentingAgents* instrumentingAgentsForNonDocumentContext(ExecutionContext*
 
 namespace InstrumentationEvents {
 const char PaintSetup[] = "PaintSetup";
-const char PaintLayer[] = "PaintLayer";
 const char RasterTask[] = "RasterTask";
 const char Paint[] = "Paint";
 const char Layer[] = "Layer";
 const char BeginFrame[] = "BeginFrame";
-const char UpdateLayer[] = "UpdateLayer";
 };
 
 namespace InstrumentationEventArguments {
 const char LayerId[] = "layerId";
 const char LayerTreeId[] = "layerTreeId";
-const char NodeId[] = "nodeId";
 const char PageId[] = "pageId";
 };