[DevTools] Consolidate overlay-related functionality in Overlay domain

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

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @unrestricted
  */
 Elements.ElementsTreeElementHighlighter = class {
   /**
    * @param {!Elements.ElementsTreeOutline} treeOutline
    */
   constructor(treeOutline) {
     this._throttler = new Common.Throttler(100);
     this._treeOutline = treeOutline;
     this._treeOutline.addEventListener(UI.TreeOutline.Events.ElementExpanded, this._clearState, this);
     this._treeOutline.addEventListener(UI.TreeOutline.Events.ElementCollapsed, this._clearState, this);
     this._treeOutline.addEventListener(Elements.ElementsTreeOutline.Events.SelectedNodeChanged, this._clearState, this);
     SDK.targetManager.addModelListener(
-        SDK.DOMModel, SDK.DOMModel.Events.NodeHighlightedInOverlay, this._highlightNode, this);
-    this._treeOutline.domModel().addEventListener(SDK.DOMModel.Events.InspectModeWillBeToggled, this._clearState, this);
+        SDK.OverlayModel, SDK.OverlayModel.Events.HighlightNodeRequested, this._highlightNode, this);
+    this._treeOutline.domModel().overlayModel().addEventListener(
+        SDK.OverlayModel.Events.InspectModeWillBeToggled, this._clearState, this);
   }
 
   /**
    * @param {!Common.Event} event
    */
   _highlightNode(event) {
     if (!Common.moduleSetting('highlightNodeOnHoverInOverlay').get())
       return;
 
     var domNode = /** @type {!SDK.DOMNode} */ (event.data);
@@ skipping 52 matching lines @@
 
   _clearState() {
     if (this._isModifyingTreeOutline)
       return;
 
     delete this._currentHighlightedElement;
     delete this._alreadyExpandedParentElement;
     delete this._pendingHighlightNode;
   }
 };