Revert of [DevTools] Consolidate overlay-related functionality in Overlay domain

third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeOutline.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
@@ skipping 602 matching lines @@
   }
 
   _onmousemove(event) {
     var element = this._treeElementFromEvent(event);
     if (element && this._previousHoveredElement === element)
       return;
 
     this.setHoverEffect(element);
 
     if (element instanceof Elements.ElementsTreeElement) {
-      this._domModel.overlayModel().highlightDOMNodeWithConfig(
+      this._domModel.highlightDOMNodeWithConfig(
           element.node().id, {mode: 'all', showInfo: !UI.KeyboardShortcut.eventHasCtrlOrMeta(event)});
       return;
     }
 
     if (element instanceof Elements.ElementsTreeOutline.ShortcutTreeElement) {
-      this._domModel.overlayModel().highlightDOMNodeWithConfig(
+      this._domModel.highlightDOMNodeWithConfig(
           undefined, {mode: 'all', showInfo: !UI.KeyboardShortcut.eventHasCtrlOrMeta(event)}, element.backendNodeId());
     }
   }
 
   _onmouseleave(event) {
     this.setHoverEffect(null);
-    SDK.OverlayModel.hideDOMNodeHighlight();
+    SDK.DOMModel.hideDOMNodeHighlight();
   }
 
   _ondragstart(event) {
     if (!event.target.isComponentSelectionCollapsed())
       return false;
     if (event.target.nodeName === 'A')
       return false;
 
     var treeElement = this._treeElementFromEvent(event);
     if (!this._isValidDragSourceOrTarget(treeElement))
       return false;
 
     if (treeElement.node().nodeName() === 'BODY' || treeElement.node().nodeName() === 'HEAD')
       return false;
 
     event.dataTransfer.setData('text/plain', treeElement.listItemElement.textContent.replace(/\u200b/g, ''));
     event.dataTransfer.effectAllowed = 'copyMove';
     this._treeElementBeingDragged = treeElement;
 
-    SDK.OverlayModel.hideDOMNodeHighlight();
+    SDK.DOMModel.hideDOMNodeHighlight();
 
     return true;
   }
 
   _ondragover(event) {
     if (!this._treeElementBeingDragged)
       return false;
 
     var treeElement = this._treeElementFromEvent(event);
     if (!this._isValidDragSourceOrTarget(treeElement))
@@ skipping 297 matching lines @@
    */
   isToggledToHidden(node) {
     return !!node.marker('hidden-marker');
   }
 
   _reset() {
     this.rootDOMNode = null;
     this.selectDOMNode(null, false);
     this._popoverHelper.hidePopover();
     delete this._clipboardNodeData;
-    SDK.OverlayModel.hideDOMNodeHighlight();
+    SDK.DOMModel.hideDOMNodeHighlight();
     this._updateRecords.clear();
   }
 
   wireToDOMModel() {
     this._domModel[Elements.ElementsTreeOutline._treeOutlineSymbol] = this;
     this._domModel.addEventListener(SDK.DOMModel.Events.NodeInserted, this._nodeInserted, this);
     this._domModel.addEventListener(SDK.DOMModel.Events.NodeRemoved, this._nodeRemoved, this);
     this._domModel.addEventListener(SDK.DOMModel.Events.AttrModified, this._attributeModified, this);
     this._domModel.addEventListener(SDK.DOMModel.Events.AttrRemoved, this._attributeRemoved, this);
     this._domModel.addEventListener(SDK.DOMModel.Events.CharacterDataModified, this._characterDataModified, this);
@@ skipping 689 matching lines @@
      */
     function resolved(node) {
       if (node) {
         this.treeOutline._selectedDOMNode = node;
         this.treeOutline._selectedNodeChanged();
       }
     }
     return true;
   }
 };