Start sending auxclick instead of click for non-primary buttons

third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js

Index: third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js b/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
index 007e68e654979e77f00907ef094dffaeb84aa7a1..eeece70f3a4c115f0b86247139c0d03abfff1053 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
@@ -364,7 +364,7 @@ function TreeElement(title, expandable)
     this._listItemNode.addEventListener("mousedown", this._handleMouseDown.bind(this), false);
     this._listItemNode.addEventListener("selectstart", this._treeElementSelectStart.bind(this), false);
     this._listItemNode.addEventListener("click", this._treeElementToggled.bind(this), false);
-    this._listItemNode.addEventListener("dblclick", this._handleDoubleClick.bind(this), false);
+    this._listItemNode.addEventListener("auxclick", this._treeElementToggled.bind(this), false);
 
     this._childrenListNode = createElement("ol");
     this._childrenListNode.parentTreeElement = this;
@@ -784,6 +784,20 @@ TreeElement.prototype = {
     _treeElementToggled: function(event)
     {
         var element = event.currentTarget;
+
+        // Handling dblclick
+        if (event.detail === 2) {
+            if (!element || element.treeElement !== this)
+                return;
+
+            var handled = this.ondblclick(event);
+            if (handled)
+                return;
+            if (this._expandable && !this.expanded)
+                this.expand();
+            return;
+        }
+
         if (element._selectionStarted) {
             delete element._selectionStarted;
             var selection = element.getComponentSelection();
@@ -837,22 +851,6 @@ TreeElement.prototype = {
         this.selectOnMouseDown(event);
     },
 
-    /**
-     * @param {!Event} event
-     */
-    _handleDoubleClick: function(event)
-    {
-        var element = event.currentTarget;
-        if (!element || element.treeElement !== this)
-            return;
-
-        var handled = this.ondblclick(event);
-        if (handled)
-            return;
-        if (this._expandable && !this.expanded)
-            this.expand();
-    },
-
     _detach: function()
     {
         this._listItemNode.remove();