text: LayersTestRunner.layerTreeModel=function(){if(!LayersTestRunner._layerTreeModel)
  LayersTestRunner._layerTreeModel=TestRunner.mainTarget.model(Layers.LayerTreeModel);return LayersTestRunner._layerTreeModel;};LayersTestRunner.labelForLayer=function(layer){const node=layer.nodeForSelfOrAncestor();let label=(node?Elements.DOMPath.fullQualifiedSelector(node,false):'<invalid node id>');const height=layer.height();const width=layer.width();if(height<=200&&width<=200)
  label+=' '+height+'x'+width;if(typeof layer.__extraData!=='undefined')
  label+=' ('+layer.__extraData+')';return label;};LayersTestRunner.dumpLayerTree=function(prefix,root){if(!prefix)
  prefix='';if(!root){root=LayersTestRunner.layerTreeModel().layerTree().contentRoot();if(!root){TestRunner.addResult('No layer root, perhaps not in the composited mode! ');TestRunner.completeTest();return;}}
  TestRunner.addResult(prefix+LayersTestRunner.labelForLayer(root));root.children().forEach(LayersTestRunner.dumpLayerTree.bind(LayersTestRunner,prefix+'    '));};LayersTestRunner.dumpLayers3DView=function(prefix,root){if(!prefix)
  prefix='';if(!root)
  root=UI.panels.layers._layers3DView._rotatingContainerElement;if(root.__layer)
  TestRunner.addResult(prefix+LayersTestRunner.labelForLayer(root.__layer));for(let element=root.firstElementChild;element;element=element.nextSibling)
  LayersTestRunner.dumpLayers3DView(prefix+'    ',element);};LayersTestRunner.evaluateAndWaitForTreeChange=async function(expression){await TestRunner.evaluateInPageAnonymously(expression);return LayersTestRunner.layerTreeModel().once(Layers.LayerTreeModel.Events.LayerTreeChanged);};LayersTestRunner.findLayerByNodeIdAttribute=function(nodeIdAttribute){let result;function testLayer(layer){const node=layer.node();if(!node)
  return false;if(!node||node.getAttribute('id')!==nodeIdAttribute)
  return false;result=layer;return true;}
  LayersTestRunner.layerTreeModel().layerTree().forEachLayer(testLayer);if(!result)
  TestRunner.addResult('ERROR: No layer for '+nodeIdAttribute);return result;};LayersTestRunner.requestLayers=function(){LayersTestRunner.layerTreeModel().enable();return LayersTestRunner.layerTreeModel().once(Layers.LayerTreeModel.Events.LayerTreeChanged);};LayersTestRunner.dispatchMouseEvent=function(eventType,button,element,offsetX,offsetY){const totalOffset=element.totalOffset();const eventArguments={bubbles:true,cancelable:true,view:window,screenX:totalOffset.left-element.scrollLeft+offsetX,screenY:totalOffset.top-element.scrollTop+offsetY,clientX:totalOffset.left+offsetX,clientY:totalOffset.top+offsetY,button:button};if(eventType==='mouseout'){eventArguments.screenX=0;eventArguments.screenY=0;eventArguments.clientX=0;eventArguments.clientY=0;}
  element.dispatchEvent(new MouseEvent(eventType,eventArguments));};LayersTestRunner.findLayerTreeElement=function(layer){const element=layer[LayerViewer.LayerTreeElement._symbol];element.reveal();return element.listItemElement;};LayersTestRunner.dispatchMouseEventToLayerTree=function(eventType,button,layer){const element=LayersTestRunner.findLayerTreeElement(layer);TestRunner.assertTrue(!!element);LayersTestRunner.dispatchMouseEvent(eventType,button,element,element.clientWidth>>1,element.clientHeight>>1);};LayersTestRunner.dumpSelectedStyles=function(message,element){const classes=[];if(element.classList.contains('selected'))
  classes.push('selected');if(element.classList.contains('hovered'))
  classes.push('hovered');TestRunner.addResult(message+': '+classes.join(', '));};;