[Invalidation Tracking] Add trace events for compositor based invalidations

Source/core/inspector/InspectorTraceEvents.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef InspectorTraceEvents_h
 #define InspectorTraceEvents_h
 
 #include "platform/EventTracer.h"
 #include "platform/TraceEvent.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class Document;
 class Event;
 class ExecutionContext;
 class FrameView;
 class GraphicsContext;
 class GraphicsLayer;
 class KURL;
 class LayoutRect;
 class LocalFrame;
+class RenderImage;
+class RenderLayer;
 class RenderObject;
-class RenderImage;
 class ResourceRequest;
 class ResourceResponse;
 class ScriptSourceCode;
 class ScriptCallStack;
 class WorkerThread;
 class XMLHttpRequest;
 
 class InspectorLayoutEvent {
 public:
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> beginData(FrameView*);
@@ skipping 58 matching lines @@
 class InspectorXhrReadyStateChangeEvent {
 public:
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(ExecutionContext*, XMLHttpRequest*);
 };
 
 class InspectorXhrLoadEvent {
 public:
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(ExecutionContext*, XMLHttpRequest*);
 };
 
+class InspectorLayerInvalidationTrackingEvent {
+public:
+    static const char SquashingLayerGeometryWasUpdated[];
+    static const char AddedToSquashingLayer[];
+    static const char RemovedFromSquashingLayer[];
+    static const char ReflectionLayerChanged[];
+    static const char NewCompositedLayer[];
+    static const char AncestorRequiresNewLayer[];
+
+    static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(const RenderObject*, const char* reason);
+};
+
 class InspectorPaintEvent {
 public:
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(RenderObject*, const LayoutRect& clipRect, const GraphicsLayer*);
 };
 
 class InspectorPaintImageEvent {
 public:
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(const RenderImage&);
 };
 
@@ skipping 39 matching lines @@
 
 class InspectorTracingSessionIdForWorkerEvent {
 public:
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(const String& sessionId, WorkerThread*);
 };
 
 } // namespace blink
 
 
 #endif // !defined(InspectorTraceEvents_h)