DevTools: Initial implementation of line-level CPU profile.

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

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 661 matching lines @@
     {
         var targets = WebInspector.targetManager.targets();
         for (var i = 0; i < targets.length; ++i)
             targets[i].heapProfilerAgent().collectGarbage();
     },
 
     _clear: function()
     {
         this._tracingModel.reset();
         this._model.reset();
+        this._resetLineLevelCPUProfile();
         this._showRecordingHelpMessage();
 
         this.requestWindowTimes(0, Infinity);
         delete this._selection;
         this._frameModel.reset();
         this._overviewPane.reset();
         for (var i = 0; i < this._currentViews.length; ++i)
             this._currentViews[i].reset();
         for (var i = 0; i < this._overviewControls.length; ++i)
             this._overviewControls[i].reset();
@@ skipping 107 matching lines @@
             return;
         }
 
         if (this._statusPane)
             this._statusPane.updateStatus(WebInspector.UIString("Processing timeline\u2026"));
         this._model.setEvents(this._tracingModel, loadedFromFile);
         this._frameModel.reset();
         this._frameModel.addTraceEvents(this._model.target(), this._model.inspectedTargetEvents(), this._model.sessionId() || "");
         if (this._irModel)
             this._irModel.populate(this._model);
+        this._setLineLevelCPUProfile(this._model.lineLevelCPUProfile());
         if (this._statusPane)
             this._statusPane.hide();
         delete this._statusPane;
         this._overviewPane.reset();
         this._overviewPane.setBounds(this._model.minimumRecordTime(), this._model.maximumRecordTime());
         this._setAutoWindowTimes();
         this._refreshViews();
         for (var i = 0; i < this._overviewControls.length; ++i)
             this._overviewControls[i].timelineStopped();
         this._setMarkers();
@@ skipping 435 matching lines @@
         if (span < totalSpan * 0.1) {
             leftTime = this._tracingModel.minimumRecordTime();
             rightTime = this._tracingModel.maximumRecordTime();
         } else {
             leftTime = Math.max(leftTime - 0.05 * span, this._tracingModel.minimumRecordTime());
             rightTime = Math.min(rightTime + 0.05 * span, this._tracingModel.maximumRecordTime());
         }
         this.requestWindowTimes(leftTime, rightTime);
     },
 
+    /**
+     * @param {!WebInspector.TimelineModel.LineLevelProfile} profile
+     */
+    _setLineLevelCPUProfile: function(profile)
+    {
+        for (var fileInfo of profile.files()) {
+            var uiSourceCode = WebInspector.workspace.uiSourceCodeForURL(/** @type {string} */ (fileInfo[0]));
+            if (!uiSourceCode)
+                continue;
+            for (var lineInfo of fileInfo[1]) {
+                var line = lineInfo[0];
+                var time = lineInfo[1];
+                uiSourceCode.addLineDecoration(line, WebInspector.TimelineUIUtils.PerformanceLineDecorator.type, time);
+            }
+        }
+    },
+
+    _resetLineLevelCPUProfile: function()
+    {
+        WebInspector.workspace.uiSourceCodes().forEach(uiSourceCode => uiSourceCode.removeAllLineDecorations(WebInspector.TimelineUIUtils.PerformanceLineDecorator.type));
+    },
+
     __proto__: WebInspector.Panel.prototype
 }
 
 /**
  * @interface
  */
 WebInspector.TimelineLifecycleDelegate = function()
 {
 }
 
@@ skipping 885 matching lines @@
      * @override
      * @param {!WebInspector.Target} target
      */
     targetRemoved: function(target)
     {
         this._targets.remove(target, true);
     },
 
     __proto__: WebInspector.Object.prototype
 }