DevTools: reformat front-end code to match chromium style.

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

 // Copyright 2016 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
- * @param {!WebInspector.Target} target
- * @param {!WebInspector.TimelineLifecycleDelegate} delegate
- * @param {!WebInspector.TracingModel} tracingModel
  * @implements {WebInspector.TargetManager.Observer}
  * @implements {WebInspector.TracingManagerClient}
+ * @unrestricted
  */
-WebInspector.TimelineController = function(target, delegate, tracingModel)
-{
+WebInspector.TimelineController = class {
+  /**
+   * @param {!WebInspector.Target} target
+   * @param {!WebInspector.TimelineLifecycleDelegate} delegate
+   * @param {!WebInspector.TracingModel} tracingModel
+   */
+  constructor(target, delegate, tracingModel) {
     this._delegate = delegate;
     this._target = target;
     this._tracingModel = tracingModel;
     this._targets = [];
     WebInspector.targetManager.observeTargets(this);
+  }
+
+  /**
+   * @param {boolean} captureCauses
+   * @param {boolean} enableJSSampling
+   * @param {boolean} captureMemory
+   * @param {boolean} capturePictures
+   * @param {boolean} captureFilmStrip
+   */
+  startRecording(captureCauses, enableJSSampling, captureMemory, capturePictures, captureFilmStrip) {
+    this._extensionTraceProviders = WebInspector.extensionServer.traceProviders().slice();
+
+    function disabledByDefault(category) {
+      return 'disabled-by-default-' + category;
+    }
+    var categoriesArray = [
+      '-*', 'devtools.timeline', 'v8.execute', disabledByDefault('devtools.timeline'),
+      disabledByDefault('devtools.timeline.frame'), WebInspector.TracingModel.TopLevelEventCategory,
+      WebInspector.TimelineModel.Category.Console, WebInspector.TimelineModel.Category.UserTiming
+    ];
+    categoriesArray.push(WebInspector.TimelineModel.Category.LatencyInfo);
+
+    if (Runtime.experiments.isEnabled('timelineFlowEvents')) {
+      categoriesArray.push(disabledByDefault('toplevel.flow'), disabledByDefault('ipc.flow'));
+    }
+    if (Runtime.experiments.isEnabled('timelineV8RuntimeCallStats') && enableJSSampling)
+      categoriesArray.push(disabledByDefault('v8.runtime_stats'));
+    if (Runtime.experiments.isEnabled('timelineTracingJSProfile') && enableJSSampling) {
+      categoriesArray.push(disabledByDefault('v8.cpu_profiler'));
+      if (WebInspector.moduleSetting('highResolutionCpuProfiling').get())
+        categoriesArray.push(disabledByDefault('v8.cpu_profiler.hires'));
+    }
+    if (captureCauses || enableJSSampling)
+      categoriesArray.push(disabledByDefault('devtools.timeline.stack'));
+    if (captureCauses && Runtime.experiments.isEnabled('timelineInvalidationTracking'))
+      categoriesArray.push(disabledByDefault('devtools.timeline.invalidationTracking'));
+    if (capturePictures) {
+      categoriesArray.push(
+          disabledByDefault('devtools.timeline.layers'), disabledByDefault('devtools.timeline.picture'),
+          disabledByDefault('blink.graphics_context_annotations'));
+    }
+    if (captureFilmStrip)
+      categoriesArray.push(disabledByDefault('devtools.screenshot'));
+
+    for (var traceProvider of this._extensionTraceProviders)
+      traceProvider.start();
+
+    var categories = categoriesArray.join(',');
+    this._startRecordingWithCategories(categories, enableJSSampling);
+  }
+
+  stopRecording() {
+    var tracingStoppedPromises = [];
+    tracingStoppedPromises.push(new Promise(resolve => this._tracingCompleteCallback = resolve));
+    tracingStoppedPromises.push(this._stopProfilingOnAllTargets());
+    this._target.tracingManager.stop();
+    tracingStoppedPromises.push(WebInspector.targetManager.resumeAllTargets());
+    Promise.all(tracingStoppedPromises).then(() => this._allSourcesFinished());
+
+    this._delegate.loadingStarted();
+
+    for (var traceProvider of this._extensionTraceProviders)
+      traceProvider.stop();
+  }
+
+  /**
+   * @override
+   * @param {!WebInspector.Target} target
+   */
+  targetAdded(target) {
+    this._targets.push(target);
+    if (this._profiling)
+      this._startProfilingOnTarget(target);
+  }
+
+  /**
+   * @override
+   * @param {!WebInspector.Target} target
+   */
+  targetRemoved(target) {
+    this._targets.remove(target, true);
+    // FIXME: We'd like to stop profiling on the target and retrieve a profile
+    // but it's too late. Backend connection is closed.
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   * @return {!Promise}
+   */
+  _startProfilingOnTarget(target) {
+    return target.hasJSCapability() ? target.profilerAgent().start() : Promise.resolve();
+  }
+
+  /**
+   * @return {!Promise}
+   */
+  _startProfilingOnAllTargets() {
+    var intervalUs = WebInspector.moduleSetting('highResolutionCpuProfiling').get() ? 100 : 1000;
+    this._target.profilerAgent().setSamplingInterval(intervalUs);
+    this._profiling = true;
+    return Promise.all(this._targets.map(this._startProfilingOnTarget));
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   * @return {!Promise}
+   */
+  _stopProfilingOnTarget(target) {
+    return target.hasJSCapability() ? target.profilerAgent().stop(this._addCpuProfile.bind(this, target.id())) :
+                                      Promise.resolve();
+  }
+
+  /**
+   * @param {number} targetId
+   * @param {?Protocol.Error} error
+   * @param {?ProfilerAgent.Profile} cpuProfile
+   */
+  _addCpuProfile(targetId, error, cpuProfile) {
+    if (!cpuProfile) {
+      WebInspector.console.warn(WebInspector.UIString('CPU profile for a target is not available. %s', error || ''));
+      return;
+    }
+    if (!this._cpuProfiles)
+      this._cpuProfiles = new Map();
+    this._cpuProfiles.set(targetId, cpuProfile);
+  }
+
+  /**
+   * @return {!Promise}
+   */
+  _stopProfilingOnAllTargets() {
+    var targets = this._profiling ? this._targets : [];
+    this._profiling = false;
+    return Promise.all(targets.map(this._stopProfilingOnTarget, this));
+  }
+
+  /**
+   * @param {string} categories
+   * @param {boolean=} enableJSSampling
+   * @param {function(?string)=} callback
+   */
+  _startRecordingWithCategories(categories, enableJSSampling, callback) {
+    WebInspector.targetManager.suspendAllTargets();
+    var profilingStartedPromise = enableJSSampling && !Runtime.experiments.isEnabled('timelineTracingJSProfile') ?
+        this._startProfilingOnAllTargets() :
+        Promise.resolve();
+    var samplingFrequencyHz = WebInspector.moduleSetting('highResolutionCpuProfiling').get() ? 10000 : 1000;
+    var options = 'sampling-frequency=' + samplingFrequencyHz;
+    var target = this._target;
+    var tracingManager = target.tracingManager;
+    WebInspector.targetManager.suspendReload(target);
+    profilingStartedPromise.then(tracingManager.start.bind(tracingManager, this, categories, options, onTraceStarted));
+    /**
+     * @param {?string} error
+     */
+    function onTraceStarted(error) {
+      WebInspector.targetManager.resumeReload(target);
+      if (callback)
+        callback(error);
+    }
+  }
+
+  /**
+   * @override
+   */
+  tracingStarted() {
+    this._tracingModel.reset();
+    this._delegate.recordingStarted();
+  }
+
+  /**
+   * @param {!Array.<!WebInspector.TracingManager.EventPayload>} events
+   * @override
+   */
+  traceEventsCollected(events) {
+    this._tracingModel.addEvents(events);
+  }
+
+  /**
+   * @override
+   */
+  tracingComplete() {
+    this._tracingCompleteCallback();
+    this._tracingCompleteCallback = null;
+  }
+
+  _allSourcesFinished() {
+    this._injectCpuProfileEvents();
+    this._tracingModel.tracingComplete();
+    this._delegate.loadingComplete(true);
+  }
+
+  /**
+   * @param {number} pid
+   * @param {number} tid
+   * @param {?ProfilerAgent.Profile} cpuProfile
+   */
+  _injectCpuProfileEvent(pid, tid, cpuProfile) {
+    if (!cpuProfile)
+      return;
+    var cpuProfileEvent = /** @type {!WebInspector.TracingManager.EventPayload} */ ({
+      cat: WebInspector.TracingModel.DevToolsMetadataEventCategory,
+      ph: WebInspector.TracingModel.Phase.Instant,
+      ts: this._tracingModel.maximumRecordTime() * 1000,
+      pid: pid,
+      tid: tid,
+      name: WebInspector.TimelineModel.RecordType.CpuProfile,
+      args: {data: {cpuProfile: cpuProfile}}
+    });
+    this._tracingModel.addEvents([cpuProfileEvent]);
+  }
+
+  _injectCpuProfileEvents() {
+    if (!this._cpuProfiles)
+      return;
+
+    var metadataEventTypes = WebInspector.TimelineModel.DevToolsMetadataEvent;
+    var metadataEvents = this._tracingModel.devToolsMetadataEvents();
+    var mainMetaEvent =
+        metadataEvents.filter(event => event.name === metadataEventTypes.TracingStartedInPage).peekLast();
+    if (!mainMetaEvent)
+      return;
+
+    var pid = mainMetaEvent.thread.process().id();
+    var mainCpuProfile = this._cpuProfiles.get(this._target.id());
+    this._injectCpuProfileEvent(pid, mainMetaEvent.thread.id(), mainCpuProfile);
+
+    var workerMetaEvents = metadataEvents.filter(event => event.name === metadataEventTypes.TracingSessionIdForWorker);
+    for (var metaEvent of workerMetaEvents) {
+      var workerId = metaEvent.args['data']['workerId'];
+      var workerTarget = this._target.subTargetsManager ? this._target.subTargetsManager.targetForId(workerId) : null;
+      if (!workerTarget)
+        continue;
+      var cpuProfile = this._cpuProfiles.get(workerTarget.id());
+      this._injectCpuProfileEvent(pid, metaEvent.args['data']['workerThreadId'], cpuProfile);
+    }
+    this._cpuProfiles = null;
+  }
+
+  /**
+   * @param {number} usage
+   * @override
+   */
+  tracingBufferUsage(usage) {
+    this._delegate.recordingProgress(usage);
+  }
+
+  /**
+   * @param {number} progress
+   * @override
+   */
+  eventsRetrievalProgress(progress) {
+    this._delegate.loadingProgress(progress);
+  }
 };
-
-WebInspector.TimelineController.prototype = {
-    /**
-     * @param {boolean} captureCauses
-     * @param {boolean} enableJSSampling
-     * @param {boolean} captureMemory
-     * @param {boolean} capturePictures
-     * @param {boolean} captureFilmStrip
-     */
-    startRecording: function(captureCauses, enableJSSampling, captureMemory, capturePictures, captureFilmStrip)
-    {
-        this._extensionTraceProviders = WebInspector.extensionServer.traceProviders().slice();
-
-        function disabledByDefault(category)
-        {
-            return "disabled-by-default-" + category;
-        }
-        var categoriesArray = [
-            "-*",
-            "devtools.timeline",
-            "v8.execute",
-            disabledByDefault("devtools.timeline"),
-            disabledByDefault("devtools.timeline.frame"),
-            WebInspector.TracingModel.TopLevelEventCategory,
-            WebInspector.TimelineModel.Category.Console,
-            WebInspector.TimelineModel.Category.UserTiming
-        ];
-        categoriesArray.push(WebInspector.TimelineModel.Category.LatencyInfo);
-
-        if (Runtime.experiments.isEnabled("timelineFlowEvents")) {
-            categoriesArray.push(disabledByDefault("toplevel.flow"),
-                                 disabledByDefault("ipc.flow"));
-        }
-        if (Runtime.experiments.isEnabled("timelineV8RuntimeCallStats") && enableJSSampling)
-            categoriesArray.push(disabledByDefault("v8.runtime_stats"));
-        if (Runtime.experiments.isEnabled("timelineTracingJSProfile") && enableJSSampling) {
-            categoriesArray.push(disabledByDefault("v8.cpu_profiler"));
-            if (WebInspector.moduleSetting("highResolutionCpuProfiling").get())
-                categoriesArray.push(disabledByDefault("v8.cpu_profiler.hires"));
-        }
-        if (captureCauses || enableJSSampling)
-            categoriesArray.push(disabledByDefault("devtools.timeline.stack"));
-        if (captureCauses && Runtime.experiments.isEnabled("timelineInvalidationTracking"))
-            categoriesArray.push(disabledByDefault("devtools.timeline.invalidationTracking"));
-        if (capturePictures) {
-            categoriesArray.push(disabledByDefault("devtools.timeline.layers"),
-                                 disabledByDefault("devtools.timeline.picture"),
-                                 disabledByDefault("blink.graphics_context_annotations"));
-        }
-        if (captureFilmStrip)
-            categoriesArray.push(disabledByDefault("devtools.screenshot"));
-
-        for (var traceProvider of this._extensionTraceProviders)
-            traceProvider.start();
-
-        var categories = categoriesArray.join(",");
-        this._startRecordingWithCategories(categories, enableJSSampling);
-    },
-
-    stopRecording: function()
-    {
-        var tracingStoppedPromises = [];
-        tracingStoppedPromises.push(new Promise(resolve => this._tracingCompleteCallback = resolve));
-        tracingStoppedPromises.push(this._stopProfilingOnAllTargets());
-        this._target.tracingManager.stop();
-        tracingStoppedPromises.push(WebInspector.targetManager.resumeAllTargets());
-        Promise.all(tracingStoppedPromises).then(() => this._allSourcesFinished());
-
-        this._delegate.loadingStarted();
-
-        for (var traceProvider of this._extensionTraceProviders)
-            traceProvider.stop();
-    },
-
-    /**
-     * @override
-     * @param {!WebInspector.Target} target
-     */
-    targetAdded: function(target)
-    {
-        this._targets.push(target);
-        if (this._profiling)
-            this._startProfilingOnTarget(target);
-    },
-
-    /**
-     * @override
-     * @param {!WebInspector.Target} target
-     */
-    targetRemoved: function(target)
-    {
-        this._targets.remove(target, true);
-        // FIXME: We'd like to stop profiling on the target and retrieve a profile
-        // but it's too late. Backend connection is closed.
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     * @return {!Promise}
-     */
-    _startProfilingOnTarget: function(target)
-    {
-        return target.hasJSCapability() ? target.profilerAgent().start() : Promise.resolve();
-    },
-
-    /**
-     * @return {!Promise}
-     */
-    _startProfilingOnAllTargets: function()
-    {
-        var intervalUs = WebInspector.moduleSetting("highResolutionCpuProfiling").get() ? 100 : 1000;
-        this._target.profilerAgent().setSamplingInterval(intervalUs);
-        this._profiling = true;
-        return Promise.all(this._targets.map(this._startProfilingOnTarget));
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     * @return {!Promise}
-     */
-    _stopProfilingOnTarget: function(target)
-    {
-        return target.hasJSCapability() ? target.profilerAgent().stop(this._addCpuProfile.bind(this, target.id())) : Promise.resolve();
-    },
-
-    /**
-     * @param {number} targetId
-     * @param {?Protocol.Error} error
-     * @param {?ProfilerAgent.Profile} cpuProfile
-     */
-    _addCpuProfile: function(targetId, error, cpuProfile)
-    {
-        if (!cpuProfile) {
-            WebInspector.console.warn(WebInspector.UIString("CPU profile for a target is not available. %s", error || ""));
-            return;
-        }
-        if (!this._cpuProfiles)
-            this._cpuProfiles = new Map();
-        this._cpuProfiles.set(targetId, cpuProfile);
-    },
-
-    /**
-     * @return {!Promise}
-     */
-    _stopProfilingOnAllTargets: function()
-    {
-        var targets = this._profiling ? this._targets : [];
-        this._profiling = false;
-        return Promise.all(targets.map(this._stopProfilingOnTarget, this));
-    },
-
-    /**
-     * @param {string} categories
-     * @param {boolean=} enableJSSampling
-     * @param {function(?string)=} callback
-     */
-    _startRecordingWithCategories: function(categories, enableJSSampling, callback)
-    {
-        WebInspector.targetManager.suspendAllTargets();
-        var profilingStartedPromise = enableJSSampling && !Runtime.experiments.isEnabled("timelineTracingJSProfile") ?
-            this._startProfilingOnAllTargets() : Promise.resolve();
-        var samplingFrequencyHz = WebInspector.moduleSetting("highResolutionCpuProfiling").get() ? 10000 : 1000;
-        var options = "sampling-frequency=" + samplingFrequencyHz;
-        var target = this._target;
-        var tracingManager = target.tracingManager;
-        WebInspector.targetManager.suspendReload(target);
-        profilingStartedPromise.then(tracingManager.start.bind(tracingManager, this, categories, options, onTraceStarted));
-        /**
-         * @param {?string} error
-         */
-        function onTraceStarted(error)
-        {
-            WebInspector.targetManager.resumeReload(target);
-            if (callback)
-                callback(error);
-        }
-    },
-
-    /**
-     * @override
-     */
-    tracingStarted: function()
-    {
-        this._tracingModel.reset();
-        this._delegate.recordingStarted();
-    },
-
-    /**
-     * @param {!Array.<!WebInspector.TracingManager.EventPayload>} events
-     * @override
-     */
-    traceEventsCollected: function(events)
-    {
-        this._tracingModel.addEvents(events);
-    },
-
-    /**
-     * @override
-     */
-    tracingComplete: function()
-    {
-        this._tracingCompleteCallback();
-        this._tracingCompleteCallback = null;
-    },
-
-    _allSourcesFinished: function()
-    {
-        this._injectCpuProfileEvents();
-        this._tracingModel.tracingComplete();
-        this._delegate.loadingComplete(true);
-    },
-
-    /**
-     * @param {number} pid
-     * @param {number} tid
-     * @param {?ProfilerAgent.Profile} cpuProfile
-     */
-    _injectCpuProfileEvent: function(pid, tid, cpuProfile)
-    {
-        if (!cpuProfile)
-            return;
-        var cpuProfileEvent = /** @type {!WebInspector.TracingManager.EventPayload} */ ({
-            cat: WebInspector.TracingModel.DevToolsMetadataEventCategory,
-            ph: WebInspector.TracingModel.Phase.Instant,
-            ts: this._tracingModel.maximumRecordTime() * 1000,
-            pid: pid,
-            tid: tid,
-            name: WebInspector.TimelineModel.RecordType.CpuProfile,
-            args: { data: { cpuProfile: cpuProfile } }
-        });
-        this._tracingModel.addEvents([cpuProfileEvent]);
-    },
-
-    _injectCpuProfileEvents: function()
-    {
-        if (!this._cpuProfiles)
-            return;
-
-        var metadataEventTypes = WebInspector.TimelineModel.DevToolsMetadataEvent;
-        var metadataEvents = this._tracingModel.devToolsMetadataEvents();
-        var mainMetaEvent = metadataEvents.filter(event => event.name === metadataEventTypes.TracingStartedInPage).peekLast();
-        if (!mainMetaEvent)
-            return;
-
-        var pid = mainMetaEvent.thread.process().id();
-        var mainCpuProfile = this._cpuProfiles.get(this._target.id());
-        this._injectCpuProfileEvent(pid, mainMetaEvent.thread.id(), mainCpuProfile);
-
-        var workerMetaEvents = metadataEvents.filter(event => event.name === metadataEventTypes.TracingSessionIdForWorker);
-        for (var metaEvent of workerMetaEvents) {
-            var workerId = metaEvent.args["data"]["workerId"];
-            var workerTarget = this._target.subTargetsManager ? this._target.subTargetsManager.targetForId(workerId) : null;
-            if (!workerTarget)
-                continue;
-            var cpuProfile = this._cpuProfiles.get(workerTarget.id());
-            this._injectCpuProfileEvent(pid, metaEvent.args["data"]["workerThreadId"], cpuProfile);
-        }
-        this._cpuProfiles = null;
-    },
-
-    /**
-     * @param {number} usage
-     * @override
-     */
-    tracingBufferUsage: function(usage)
-    {
-        this._delegate.recordingProgress(usage);
-    },
-
-    /**
-     * @param {number} progress
-     * @override
-     */
-    eventsRetrievalProgress: function(progress)
-    {
-        this._delegate.loadingProgress(progress);
-    }
-};