[Invalidation Tracking] Add trace events for compositor based invalidations

Source/core/rendering/compositing/CompositedLayerMapping.cpp

Index: Source/core/rendering/compositing/CompositedLayerMapping.cpp
diff --git a/Source/core/rendering/compositing/CompositedLayerMapping.cpp b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
index 70fbf7f15bc36f1a3d104c79aefae6f7205fd51e..c0b96abf9d53c25f4e59b5de39a46fbefa81c7c3 100644
--- a/Source/core/rendering/compositing/CompositedLayerMapping.cpp
+++ b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
@@ -554,7 +554,7 @@ void CompositedLayerMapping::computeBoundsOfOwningLayer(const RenderLayer* compo
 }
 
 void CompositedLayerMapping::updateSquashingLayerGeometry(const LayoutPoint& offsetFromCompositedAncestor, const IntPoint& graphicsLayerParentLocation, const RenderLayer& referenceLayer,
-    Vector<GraphicsLayerPaintInfo>& layers, GraphicsLayer* squashingLayer, LayoutPoint* offsetFromTransformedAncestor, Vector<RenderLayer*>& layersNeedingPaintInvalidation)
+    Vector<GraphicsLayerPaintInfo>& layers, GraphicsLayer* squashingLayer, LayoutPoint* offsetFromTransformedAncestor, LayersNeedingPaintInvalidation& layersNeedingPaintInvalidation)
 {
     if (!squashingLayer)
         return;
@@ -608,7 +608,8 @@ void CompositedLayerMapping::updateSquashingLayerGeometry(const LayoutPoint& off
         LayoutSize subpixelAccumulation = offsetFromSquashLayerOrigin + newOffsetFromRenderer;
         if (layers[i].offsetFromRendererSet && layers[i].offsetFromRenderer != newOffsetFromRenderer) {
             layers[i].renderLayer->paintInvalidator().paintInvalidationIncludingNonCompositingDescendants();
-            layersNeedingPaintInvalidation.append(layers[i].renderLayer);
+
+            layersNeedingPaintInvalidation.append(std::make_pair(layers[i].renderLayer, InspectorLayerInvalidationTrackingEvent::SquashingLayerGeometryWasUpdated));
         }
         layers[i].offsetFromRenderer = newOffsetFromRenderer;
         layers[i].offsetFromRendererSet = true;
@@ -626,7 +627,7 @@ void CompositedLayerMapping::updateSquashingLayerGeometry(const LayoutPoint& off
         layers[i].localClipRectForSquashedLayer = localClipRectForSquashedLayer(referenceLayer, layers[i], layers);
 }
 
-void CompositedLayerMapping::updateGraphicsLayerGeometry(const RenderLayer* compositingContainer, const RenderLayer* compositingStackingContext, Vector<RenderLayer*>& layersNeedingPaintInvalidation)
+void CompositedLayerMapping::updateGraphicsLayerGeometry(const RenderLayer* compositingContainer, const RenderLayer* compositingStackingContext, LayersNeedingPaintInvalidation& layersNeedingPaintInvalidation)
 {
     ASSERT(m_owningLayer.compositor()->lifecycle().state() == DocumentLifecycle::InCompositingUpdate);
 
@@ -864,7 +865,7 @@ void CompositedLayerMapping::updateTransformGeometry(const IntPoint& snappedOffs
     }
 }
 
-void CompositedLayerMapping::updateReflectionLayerGeometry(Vector<RenderLayer*>& layersNeedingPaintInvalidation)
+void CompositedLayerMapping::updateReflectionLayerGeometry(LayersNeedingPaintInvalidation& layersNeedingPaintInvalidation)
 {
     if (!m_owningLayer.reflectionInfo() || !m_owningLayer.reflectionInfo()->reflectionLayer()->hasCompositedLayerMapping())
         return;