[Invalidation Tracking] Add trace events for compositor based invalidations

Source/core/rendering/compositing/RenderLayerCompositor.cpp

 /*
  * Copyright (C) 2009, 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #include "core/rendering/compositing/RenderLayerCompositor.h"
 
 #include "core/animation/DocumentAnimations.h"
 #include "core/dom/Fullscreen.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorNodeIds.h"
+#include "core/inspector/InspectorTraceEvents.h"
 #include "core/page/Chrome.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/Page.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/rendering/RenderEmbeddedObject.h"
 #include "core/rendering/RenderLayerStackingNode.h"
 #include "core/rendering/RenderLayerStackingNodeIterator.h"
 #include "core/rendering/RenderPart.h"
 #include "core/rendering/RenderVideo.h"
 #include "core/rendering/RenderView.h"
@@ skipping 256 matching lines @@
     if (!hasAcceleratedCompositing()) {
         updateWithoutAcceleratedCompositing(updateType);
         return;
     }
 
     if (updateType == CompositingUpdateNone)
         return;
 
     RenderLayer* updateRoot = rootRenderLayer();
 
-    Vector<RenderLayer*> layersNeedingPaintInvalidation;
+    LayersNeedingPaintInvalidation layersNeedingPaintInvalidation;
 
     if (updateType >= CompositingUpdateAfterCompositingInputChange) {
         CompositingInputsUpdater(updateRoot).update();
 
 #if ENABLE(ASSERT)
         // FIXME: Move this check to the end of the compositing update.
         CompositingInputsUpdater::assertNeedsCompositingInputsUpdateBitsCleared(updateRoot);
 #endif
 
         CompositingRequirementsUpdater(m_renderView, m_compositingReasonFinder).update(updateRoot);
@@ skipping 45 matching lines @@
         if (RuntimeEnabledFeatures::overlayFullscreenVideoEnabled())
             applyOverlayFullscreenVideoAdjustment();
     }
 
     if (m_needsUpdateFixedBackground) {
         rootFixedBackgroundsChanged();
         m_needsUpdateFixedBackground = false;
     }
 
     for (unsigned i = 0; i < layersNeedingPaintInvalidation.size(); i++) {
-        RenderLayer* layer = layersNeedingPaintInvalidation[i];
+        RenderLayer* layer = layersNeedingPaintInvalidation[i].first;
+        TRACE_EVENT_INSTANT1(
+            TRACE_DISABLED_BY_DEFAULT("devtools.timeline.invalidationTracking"),
+            "LayerInvalidationTracking",
+            "data",
+            InspectorLayerInvalidationTrackingEvent::data(layer->renderer()->containerForPaintInvalidation(), layersNeedingPaintInvalidation[i].second));
         layer->paintInvalidator().computePaintInvalidationRectsIncludingNonCompositingDescendants();
 
         paintInvalidationOnCompositingChange(layer);
     }
 
     // Inform the inspector that the layer tree has changed.
     if (m_renderView.frame()->isMainFrame())
         InspectorInstrumentation::layerTreeDidChange(m_renderView.frame());
 }
 
@@ skipping 780 matching lines @@
     } else if (graphicsLayer == m_scrollLayer.get()) {
         name = "LocalFrame Scrolling Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink