Timeline: do not rely on UpdateLayer & PaintLayer trace events

Source/core/inspector/InspectorInstrumentation.h

 /*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
@@ skipping 105 matching lines @@
 InstrumentingAgents* instrumentingAgentsFor(Node*);
 InstrumentingAgents* instrumentingAgentsFor(WorkerGlobalScope*);
 
 // Helper for the one above.
 InstrumentingAgents* instrumentingAgentsForNonDocumentContext(ExecutionContext*);
 
 }  // namespace InspectorInstrumentation
 
 namespace InstrumentationEvents {
 extern const char PaintSetup[];
-extern const char PaintLayer[];
 extern const char RasterTask[];
 extern const char Paint[];
 extern const char Layer[];
 extern const char BeginFrame[];
-extern const char UpdateLayer[];
 };
 
 namespace InstrumentationEventArguments {
 extern const char LayerId[];
 extern const char LayerTreeId[];
-extern const char NodeId[];
 extern const char PageId[];
 };
 
 namespace InspectorInstrumentation {
 
 inline InstrumentingAgents* instrumentingAgentsFor(ExecutionContext* context)
 {
     if (!context)
         return 0;
     return context->isDocument() ? instrumentingAgentsFor(*toDocument(context)) : instrumentingAgentsForNonDocumentContext(context);
@@ skipping 41 matching lines @@
 } // namespace WebCore
 
 // This file will soon be generated
 #include "InspectorInstrumentationInl.h"
 
 #include "InspectorInstrumentationCustomInl.h"
 
 #include "InspectorOverridesInl.h"
 
 #endif // !defined(InspectorInstrumentation_h)