Timeline addTraceProvider API

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 32 matching lines @@
     this.element.addEventListener("contextmenu", this._contextMenu.bind(this), false);
     this._dropTarget = new WebInspector.DropTarget(this.element, [WebInspector.DropTarget.Types.Files, WebInspector.DropTarget.Types.URIList], WebInspector.UIString("Drop timeline file or URL here"), this._handleDrop.bind(this));
 
     this._state = WebInspector.TimelinePanel.State.Idle;
     this._detailsLinkifier = new WebInspector.Linkifier();
     this._windowStartTime = 0;
     this._windowEndTime = Infinity;
     this._millisecondsToRecordAfterLoadEvent = 3000;
     this._toggleRecordAction = /** @type {!WebInspector.Action }*/ (WebInspector.actionRegistry.action("timeline.toggle-recording"));
 
+    this._extensionTraceProviders = WebInspector.extensionServer.traceProviders();
+
     /** @type {!Array<!WebInspector.TimelineModel.Filter>} */
     this._filters = [];
     if (!Runtime.experiments.isEnabled("timelineShowAllEvents")) {
         this._filters.push(WebInspector.TimelineUIUtils.visibleEventsFilter());
         this._filters.push(new WebInspector.ExcludeTopLevelFilter());
     }
 
     // Create models.
     this._tracingModelBackingStorage = new WebInspector.TempFileBackingStorage("tracing");
     this._tracingModel = new WebInspector.TracingModel(this._tracingModelBackingStorage);
@@ skipping 320 matching lines @@
         if (!Runtime.experiments.isEnabled("timelineRecordingPerspectives") || perspectiveSetting.get() === WebInspector.TimelinePanel.Perspectives.Custom) {
             this._panelToolbar.appendToolbarItem(this._createSettingCheckbox(
                 WebInspector.UIString("Network"), this._captureNetworkSetting, WebInspector.UIString("Show network requests information")));
             this._panelToolbar.appendToolbarItem(this._createSettingCheckbox(
                 WebInspector.UIString("JS Profile"), this._captureJSProfileSetting, WebInspector.UIString("Capture JavaScript stacks with sampling profiler. (Has small performance overhead)")));
             this._panelToolbar.appendToolbarItem(screenshotCheckbox);
             this._panelToolbar.appendToolbarItem(this._createSettingCheckbox(
                 WebInspector.UIString("Memory"), this._captureMemorySetting, WebInspector.UIString("Capture memory information on every timeline event.")));
             this._panelToolbar.appendToolbarItem(this._createSettingCheckbox(
                 WebInspector.UIString("Paint"), this._captureLayersAndPicturesSetting, WebInspector.UIString("Capture graphics layer positions and rasterization draw calls. (Has large performance overhead)")));
+
+            for (var provider of this._extensionTraceProviders) {
+                this._panelToolbar.appendToolbarItem(this._createSettingCheckbox(

[caseq, 2016/07/11 18:58:38]

let's also have some handling for trace providers that are registered after the
Timeline panel is shown.

+                    WebInspector.UIString(provider.categoryName),
+                    WebInspector.settings.createSetting(provider.categoryName, false),
+                    WebInspector.UIString(provider.categoryTooltip)));
+            }
         } else {
             this._panelToolbar.appendToolbarItem(screenshotCheckbox);
         }
 
         this._captureNetworkSetting.addChangeListener(this._onNetworkChanged, this);
         this._captureMemorySetting.addChangeListener(this._onModeChanged, this);
         this._captureFilmStripSetting.addChangeListener(this._onModeChanged, this);
 
         this._panelToolbar.appendSeparator();
         var garbageCollectButton = new WebInspector.ToolbarButton(WebInspector.UIString("Collect garbage"), "garbage-collect-toolbar-item");
@@ skipping 362 matching lines @@
 
         if (!success) {
             this._statusPane.hide();
             delete this._statusPane;
             this._clear();
             return;
         }
 
         if (this._statusPane)
             this._statusPane.updateStatus(WebInspector.UIString("Processing timeline\u2026"));
-        this._model.setEvents(this._tracingModel, loadedFromFile);
+        this._model.setEvents(this._tracingModel, this._extensionTraceProviders, loadedFromFile);
         this._frameModel.reset();
         this._frameModel.addTraceEvents(this._model.target(), this._model.inspectedTargetEvents(), this._model.sessionId() || "");
 
         var groups = WebInspector.TimelineModel.AsyncEventGroup;
         var asyncEventsByGroup = this._model.mainThreadAsyncEvents();
         this._irModel.populate(asyncEventsByGroup.get(groups.input), asyncEventsByGroup.get(groups.animation));
         this._model.cpuProfiles().forEach(profile => WebInspector.LineLevelProfile.instance().appendCPUProfile(profile));
         if (this._statusPane)
             this._statusPane.hide();
         delete this._statusPane;
@@ skipping 1251 matching lines @@
      * @override
      * @param {!WebInspector.Target} target
      */
     targetRemoved: function(target)
     {
         this._targets.remove(target, true);
     },
 
     __proto__: WebInspector.Object.prototype
 }