[Devtools] Removed DataGrid's hasChildren getter/setter to use functions

third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js

Index: third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js b/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
index 4ea0f932bace64b895460d474250c8a2ac5f7ec9..675221b5aae3a41004f02d9f479dcbcba3ca0d6d 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
@@ -267,7 +267,7 @@ UI.DataGrid = class extends Common.Object {
     /** @type {!UI.DataGridNode} */
     this._rootNode = rootNode;
     rootNode._isRoot = true;
-    rootNode.hasChildren = false;
+    rootNode.setHasChildren(false);
     rootNode._expanded = true;
     rootNode._revealed = true;
     rootNode.selectable = false;
@@ -805,7 +805,7 @@ UI.DataGrid = class extends Common.Object {
       if (!this.selectedNode.revealed) {
         this.selectedNode.reveal();
         handled = true;
-      } else if (this.selectedNode.hasChildren) {
+      } else if (this.selectedNode.hasChildren()) {
         handled = true;
         if (this.selectedNode.expanded) {
           nextSelectedNode = this.selectedNode.children[0];
@@ -1009,7 +1009,7 @@ UI.DataGrid = class extends Common.Object {
    */
   _clickInDataTable(event) {
     var gridNode = this.dataGridNodeFromNode(/** @type {!Node} */ (event.target));
-    if (!gridNode || !gridNode.hasChildren || !gridNode.isEventWithinDisclosureTriangle(event))
+    if (!gridNode || !gridNode.hasChildren() || !gridNode.isEventWithinDisclosureTriangle(event))
       return;
 
     if (gridNode.expanded) {
@@ -1225,7 +1225,7 @@ UI.DataGridNode = class extends Common.Object {
     /** @type {!Object.<string, *>} */
     this._data = data || {};
     /** @type {boolean} */
-    this.hasChildren = hasChildren || false;
+    this._hasChildren = hasChildren || false;
     /** @type {!Array.<!UI.DataGridNode>} */
     this.children = [];
     /** @type {?UI.DataGrid} */
@@ -1264,7 +1264,7 @@ UI.DataGridNode = class extends Common.Object {
     this._element = createElement('tr');
     this._element._dataGridNode = this;
 
-    if (this.hasChildren)
+    if (this._hasChildren)
       this._element.classList.add('parent');
     if (this.expanded)
       this._element.classList.add('expanded');
@@ -1340,14 +1340,14 @@ UI.DataGridNode = class extends Common.Object {
   /**
    * @return {boolean}
    */
-  get hasChildren() {
+  hasChildren() {
     return this._hasChildren;
   }
 
   /**
    * @param {boolean} x
    */
-  set hasChildren(x) {
+  setHasChildren(x) {
     if (this._hasChildren === x)
       return;
 
@@ -1524,7 +1524,7 @@ UI.DataGridNode = class extends Common.Object {
     child.remove();
 
     this.children.splice(index, 0, child);
-    this.hasChildren = true;
+    this.setHasChildren(true);
 
     child.parent = this;
     child.dataGrid = this.dataGrid;
@@ -1582,7 +1582,7 @@ UI.DataGridNode = class extends Common.Object {
     child.previousSibling = null;
 
     if (this.children.length <= 0)
-      this.hasChildren = false;
+      this.setHasChildren(false);
   }
 
   removeChildren() {
@@ -1598,7 +1598,7 @@ UI.DataGridNode = class extends Common.Object {
     }
 
     this.children = [];
-    this.hasChildren = false;
+    this.setHasChildren(false);
   }
 
   /**
@@ -1644,7 +1644,7 @@ UI.DataGridNode = class extends Common.Object {
   }
 
   expand() {
-    if (!this.hasChildren || this.expanded)
+    if (!this._hasChildren || this.expanded)
       return;
     if (this._isRoot)
       return;
@@ -1751,7 +1751,7 @@ UI.DataGridNode = class extends Common.Object {
    * @return {?UI.DataGridNode}
    */
   traverseNextNode(skipHidden, stayWithin, dontPopulate, info) {
-    if (!dontPopulate && this.hasChildren)
+    if (!dontPopulate && this._hasChildren)
       this.populate();
 
     if (info)
@@ -1792,12 +1792,12 @@ UI.DataGridNode = class extends Common.Object {
    */
   traversePreviousNode(skipHidden, dontPopulate) {
     var node = (!skipHidden || this.revealed) ? this.previousSibling : null;
-    if (!dontPopulate && node && node.hasChildren)
+    if (!dontPopulate && node && node._hasChildren)
       node.populate();
 
     while (node &&
            ((!skipHidden || (node.revealed && node.expanded)) ? node.children[node.children.length - 1] : null)) {
-      if (!dontPopulate && node.hasChildren)
+      if (!dontPopulate && node._hasChildren)
         node.populate();
       node = ((!skipHidden || (node.revealed && node.expanded)) ? node.children[node.children.length - 1] : null);
     }
@@ -1816,7 +1816,7 @@ UI.DataGridNode = class extends Common.Object {
    * @return {boolean}
    */
   isEventWithinDisclosureTriangle(event) {
-    if (!this.hasChildren)
+    if (!this._hasChildren)
       return false;
     var cell = event.target.enclosingNodeOrSelfWithNodeName('td');
     if (!cell || !cell.classList.contains('disclosure'))