DevTooos: Profiler domain refactoring: Make deoptReason and positionTicks fields optional.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineTreeView.js

 // Copyright 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.
 
 /**
  * @constructor
  * @extends {WebInspector.VBox}
  * @param {!WebInspector.TimelineModel} model
  * @param {!Array<!WebInspector.TimelineModel.Filter>} filters
  */
@@ skipping 327 matching lines @@
         var name = container.createChild("div", "activity-name");
         var event = this._profileNode.event;
         if (this._profileNode.isGroupNode()) {
             var treeView = /** @type {!WebInspector.AggregatedTimelineTreeView} */ (this._treeView);
             var info = treeView._displayInfoForGroupNode(this._profileNode);
             name.textContent = info.name;
             icon.style.backgroundColor = info.color;
         } else if (event) {
             var data = event.args["data"];
             var deoptReason = data && data["deoptReason"];
-            if (deoptReason && deoptReason !== "no reason")
+            if (deoptReason)
                 container.createChild("div", "activity-warning").title = WebInspector.UIString("Not optimized: %s", deoptReason);
             name.textContent = event.name === WebInspector.TimelineModel.RecordType.JSFrame
                 ? WebInspector.beautifyFunctionName(event.args["data"]["functionName"])
                 : WebInspector.TimelineUIUtils.eventTitle(event);
             var link = this._treeView._linkifyLocation(event);
             if (link)
                 container.createChild("div", "activity-link").appendChild(link);
             icon.style.backgroundColor = WebInspector.TimelineUIUtils.eventColor(event);
         }
         return cell;
@@ skipping 520 matching lines @@
         return selectedNode && /** @type {!WebInspector.TimelineTreeView.GridNode} */ (selectedNode)._profileNode;
     },
 
     _onSelectionChanged: function()
     {
         this.dispatchEventToListeners(WebInspector.TimelineStackView.Events.SelectionChanged);
     },
 
     __proto__: WebInspector.VBox.prototype
 }