CompositedLayerMapping should use dirty bits for bounds update

Source/core/rendering/compositing/RenderLayerCompositor.cpp

Index: Source/core/rendering/compositing/RenderLayerCompositor.cpp
diff --git a/Source/core/rendering/compositing/RenderLayerCompositor.cpp b/Source/core/rendering/compositing/RenderLayerCompositor.cpp
index 33e71e4bf9be2aa8073bf89161355ce178596998..76432167df660bb4f94b0422981185ac8656bbc8 100644
--- a/Source/core/rendering/compositing/RenderLayerCompositor.cpp
+++ b/Source/core/rendering/compositing/RenderLayerCompositor.cpp
@@ -1420,12 +1420,12 @@ void RenderLayerCompositor::updateCompositingDescendantGeometry(RenderLayerStack
     if (layer->stackingNode() != compositingAncestor) {
         if (layer->hasCompositedLayerMapping()) {
             CompositedLayerMappingPtr compositedLayerMapping = layer->compositedLayerMapping();
-            compositedLayerMapping->updateCompositedBounds();
+            compositedLayerMapping->updateCompositedBounds(GraphicsLayerUpdater::ForceUpdate);
 
             if (layer->reflectionInfo()) {
                 RenderLayer* reflectionLayer = layer->reflectionInfo()->reflectionLayer();
                 if (reflectionLayer->hasCompositedLayerMapping())
-                    reflectionLayer->compositedLayerMapping()->updateCompositedBounds();
+                    reflectionLayer->compositedLayerMapping()->updateCompositedBounds(GraphicsLayerUpdater::ForceUpdate);
             }
 
             compositedLayerMapping->updateGraphicsLayerGeometry(GraphicsLayerUpdater::ForceUpdate);