DevTools: Nuke timeline costly functions flamechart experiment

Source/devtools/front_end/timeline/TimelineFlameChart.js

Index: Source/devtools/front_end/timeline/TimelineFlameChart.js
diff --git a/Source/devtools/front_end/timeline/TimelineFlameChart.js b/Source/devtools/front_end/timeline/TimelineFlameChart.js
index c71740310b8eeccd13e29dc3b298e73b8947ce1e..2e9073c84e0a2aa447e05ee5f7ea34d8a1ddbc8e 100644
--- a/Source/devtools/front_end/timeline/TimelineFlameChart.js
+++ b/Source/devtools/front_end/timeline/TimelineFlameChart.js
@@ -1002,167 +1002,6 @@ WebInspector.TimelineFlameChartNetworkDataProvider.prototype = {
 
 /**
  * @constructor
- * @extends {WebInspector.TimelineFlameChartDataProviderBase}
- * @param {!WebInspector.TimelineModel} model
- */
-WebInspector.TimelineFlameChartBottomUpDataProvider = function(model)
-{
-    WebInspector.TimelineFlameChartDataProviderBase.call(this, model);
-}
-
-WebInspector.TimelineFlameChartBottomUpDataProvider.prototype = {
-    /**
-     * @override
-     * @return {!WebInspector.FlameChart.TimelineData}
-     */
-    timelineData: function()
-    {
-        if (this._timelineData)
-            return this._timelineData;
-        this._entries = [];
-        this._timelineData = new WebInspector.FlameChart.TimelineData([], [], []);
-        this._appendTimelineData(this._model.mainThreadEvents());
-        return this._timelineData;
-    },
-
-    /**
-     * @override
-     */
-    reset: function()
-    {
-        WebInspector.TimelineFlameChartDataProviderBase.prototype.reset.call(this);
-        this._entries = [];
-    },
-
-    /**
-     * @param {number} startTime
-     * @param {number} endTime
-     */
-    setWindowTimes: function(startTime, endTime)
-    {
-        this._startTime = startTime;
-        this._endTime = endTime;
-        this.reset();
-    },
-
-    /**
-     * @override
-     * @param {number} index
-     * @return {string}
-     */
-    entryTitle: function(index)
-    {
-        return this._entries[index].name;
-    },
-
-    /**
-     * @override
-     * @param {number} entryIndex
-     * @return {string}
-     */
-    entryColor: function(entryIndex)
-    {
-        var entry = this._entries[entryIndex];
-        if (entry.color)
-            return entry.color;
-        var event = entry.event;
-        if (!event)
-            return "#aaa";
-        if (event.name === WebInspector.TimelineModel.RecordType.JSFrame)
-            return WebInspector.TimelineUIUtils.colorForURL(event.args["data"]["url"]);
-        return WebInspector.TimelineUIUtils.eventStyle(event).category.fillColorStop1;
-    },
-
-    /**
-     * @param {!Array.<!WebInspector.TracingModel.Event>} events
-     */
-    _appendTimelineData: function(events)
-    {
-        /**
-         * @param {!WebInspector.TracingModel.Event} e
-         * @return {string}
-         */
-        function eventId(e)
-        {
-            if (e.name === WebInspector.TimelineModel.RecordType.JSFrame) {
-                var data = e.args["data"];
-                return "f:" + (data["CallUID"] || (data["functionName"] + "@" + data["url"]));
-            }
-            return e.name;
-        }
-        var categoryGroupNodes = new Map();
-        /**
-         * @param {!WebInspector.TimelineModel.ProfileTreeNode} node
-         * @return {!WebInspector.TimelineModel.ProfileTreeNode}
-         */
-        function groupNode(node)
-        {
-            var category = WebInspector.TimelineUIUtils.eventStyle(node.event).category;
-            var groupNode = categoryGroupNodes.get(category.title);
-            if (!groupNode) {
-                groupNode = new WebInspector.TimelineModel.ProfileTreeNode();
-                groupNode.totalTime = 0;
-                groupNode.name = category.title;
-                groupNode.color = category.fillColorStop1;
-                categoryGroupNodes.set(category.title, groupNode);
-            }
-            return groupNode;
-        }
-        var topDownTree = WebInspector.TimelineUIUtils.buildTopDownTree(events, this._startTime, this._endTime, this._filters, eventId);
-        var bottomUpTree = WebInspector.TimelineUIUtils.buildBottomUpTree(topDownTree, groupNode);
-        for (var group of categoryGroupNodes) {
-            bottomUpTree.children.set(group[0], group[1]);
-            bottomUpTree.totalTime += group[1].totalTime;
-        }
-        this._flowEventIndexById = {};
-        this._minimumBoundary = 0;
-        this._currentLevel = 0;
-        this._timeSpan = appendTree.call(this, 0, 0, bottomUpTree);
-
-        /**
-         * @param {number} level
-         * @param {number} position
-         * @param {!WebInspector.TimelineModel.ProfileTreeNode} node
-         * @this {!WebInspector.TimelineFlameChartBottomUpDataProvider}
-         */
-        function appendTree(level, position, node)
-        {
-            /**
-             * @param {!WebInspector.TimelineModel.ProfileTreeNode} a
-             * @param {!WebInspector.TimelineModel.ProfileTreeNode} b
-             * @return {number}
-             */
-            function sortFunction(a, b)
-            {
-                return b.totalTime - a.totalTime;
-            }
-            this._currentLevel = Math.max(this._currentLevel, level);
-            this._appendNode(node, level, position);
-            if (node.children)
-                Array.from(node.children.values()).sort(sortFunction).reduce(appendTree.bind(this, level + 1), position);
-            return position + node.totalTime;
-        }
-    },
-
-    /**
-     * @param {!WebInspector.TimelineModel.ProfileTreeNode} node
-     * @param {number} level
-     * @param {number} position
-     */
-    _appendNode: function(node, level, position)
-    {
-        var index = this._entries.length;
-        this._entries.push(node);
-        this._timelineData.entryLevels[index] = level;
-        this._timelineData.entryTotalTimes[index] = node.totalTime;
-        this._timelineData.entryStartTimes[index] = position;
-    },
-
-    __proto__: WebInspector.TimelineFlameChartDataProviderBase.prototype
-}
-
-/**
- * @constructor
  * @implements {WebInspector.FlameChartMarker}
  * @param {number} startTime
  * @param {number} startOffset