DevTools: Support Top-Down tree view on Timeline

Source/devtools/front_end/timeline/TimelineModel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1537 matching lines @@
     }
 
     WebInspector.TimelineModel.forEachEvent(events, onStartEvent, onEndEvent);
     root.totalTime -= root.selfTime;
     root.selfTime = 0;
     return root;
 }
 
 /**
  * @param {!WebInspector.TimelineModel.ProfileTreeNode} topDownTree
- * @param {function(!WebInspector.TimelineModel.ProfileTreeNode):?WebInspector.TimelineModel.ProfileTreeNode=} groupingCallback
+ * @param {?function(!WebInspector.TimelineModel.ProfileTreeNode):!WebInspector.TimelineModel.ProfileTreeNode=} groupingCallback
  * @return {!WebInspector.TimelineModel.ProfileTreeNode}
  */
 WebInspector.TimelineModel.buildBottomUpTree = function(topDownTree, groupingCallback)
 {
     var buRoot = new WebInspector.TimelineModel.ProfileTreeNode();
     buRoot.selfTime = 0;
     buRoot.totalTime = 0;
     buRoot.name = WebInspector.UIString("Bottom-Up Chart");
     /** @type {!Map<string,!WebInspector.TimelineModel.ProfileTreeNode>} */
     buRoot.children = new Map();
@@ skipping 260 matching lines @@
         return event.hasCategory(WebInspector.TracingModel.ConsoleEventCategory)
             || !!this._eventNames[event.name];
     },
 
     __proto__: WebInspector.TraceEventNameFilter.prototype
 }
 
 /**
  * @constructor
  * @implements {WebInspector.TraceEventFilter}
+ * @param {function(!WebInspector.TracingModel.Event):boolean} filter
+ */
+WebInspector.CustomFilter = function(filter)
+{
+    WebInspector.TraceEventFilter.call(this);
+    this._filter = filter;
+}
+
+WebInspector.CustomFilter.prototype = {
+    /**
+     * @override
+     * @param {!WebInspector.TracingModel.Event} event
+     * @return {boolean}
+     */
+    accept: function(event)
+    {
+        return this._filter(event);
+    }
+}
+
+/**
+ * @constructor
+ * @implements {WebInspector.TraceEventFilter}
  */
 WebInspector.ExcludeTopLevelFilter = function()
 {
 }
 
 WebInspector.ExcludeTopLevelFilter.prototype = {
     /**
      * @override
      * @param {!WebInspector.TracingModel.Event} event
      * @return {boolean}
@@ skipping 491 matching lines @@
         /** @type {!Object.<string, !Array.<!WebInspector.InvalidationTrackingEvent>>} */
         this._invalidations = {};
         /** @type {!Object.<number, !Array.<!WebInspector.InvalidationTrackingEvent>>} */
         this._invalidationsByNodeId = {};
 
         this._lastRecalcStyle = undefined;
         this._lastPaintWithLayer = undefined;
         this._didPaint = false;
     }
 }