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

third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js

 /*
  * Copyright 2014 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
- * @extends {WebInspector.Object}
+ * @unrestricted
  */
-WebInspector.TargetManager = function()
-{
-    WebInspector.Object.call(this);
+WebInspector.TargetManager = class extends WebInspector.Object {
+  constructor() {
+    super();
     /** @type {!Array.<!WebInspector.Target>} */
     this._targets = [];
     /** @type {!Array.<!WebInspector.TargetManager.Observer>} */
     this._observers = [];
-    this._observerCapabiliesMaskSymbol = Symbol("observerCapabilitiesMask");
+    this._observerCapabiliesMaskSymbol = Symbol('observerCapabilitiesMask');
     /** @type {!Map<symbol, !Array<{modelClass: !Function, thisObject: (!Object|undefined), listener: function(!WebInspector.Event)}>>} */
     this._modelListeners = new Map();
     this._isSuspended = false;
+  }
+
+  suspendAllTargets() {
+    if (this._isSuspended)
+      return;
+    this._isSuspended = true;
+    this.dispatchEventToListeners(WebInspector.TargetManager.Events.SuspendStateChanged);
+
+    for (var i = 0; i < this._targets.length; ++i) {
+      for (var model of this._targets[i].models())
+        model.suspendModel();
+    }
+  }
+
+  /**
+   * @return {!Promise}
+   */
+  resumeAllTargets() {
+    if (!this._isSuspended)
+      throw new Error('Not suspended');
+    this._isSuspended = false;
+    this.dispatchEventToListeners(WebInspector.TargetManager.Events.SuspendStateChanged);
+
+    var promises = [];
+    for (var i = 0; i < this._targets.length; ++i) {
+      for (var model of this._targets[i].models())
+        promises.push(model.resumeModel());
+    }
+    return Promise.all(promises);
+  }
+
+  suspendAndResumeAllTargets() {
+    this.suspendAllTargets();
+    this.resumeAllTargets();
+  }
+
+  /**
+   * @return {boolean}
+   */
+  allTargetsSuspended() {
+    return this._isSuspended;
+  }
+
+  /**
+   * @return {string}
+   */
+  inspectedURL() {
+    return this._targets[0] ? this._targets[0].inspectedURL() : '';
+  }
+
+  /**
+   * @param {!WebInspector.TargetManager.Events} eventName
+   * @param {!WebInspector.Event} event
+   */
+  _redispatchEvent(eventName, event) {
+    this.dispatchEventToListeners(eventName, event.data);
+  }
+
+  /**
+   * @param {boolean=} bypassCache
+   * @param {string=} injectedScript
+   */
+  reloadPage(bypassCache, injectedScript) {
+    if (!this._targets.length)
+      return;
+
+    var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(this._targets[0]);
+    if (!resourceTreeModel)
+      return;
+
+    resourceTreeModel.reloadPage(bypassCache, injectedScript);
+  }
+
+  /**
+   * @param {!Function} modelClass
+   * @param {symbol} eventType
+   * @param {function(!WebInspector.Event)} listener
+   * @param {!Object=} thisObject
+   */
+  addModelListener(modelClass, eventType, listener, thisObject) {
+    for (var i = 0; i < this._targets.length; ++i) {
+      var model = this._targets[i].model(modelClass);
+      if (model)
+        model.addEventListener(eventType, listener, thisObject);
+    }
+    if (!this._modelListeners.has(eventType))
+      this._modelListeners.set(eventType, []);
+    this._modelListeners.get(eventType).push({modelClass: modelClass, thisObject: thisObject, listener: listener});
+  }
+
+  /**
+   * @param {!Function} modelClass
+   * @param {symbol} eventType
+   * @param {function(!WebInspector.Event)} listener
+   * @param {!Object=} thisObject
+   */
+  removeModelListener(modelClass, eventType, listener, thisObject) {
+    if (!this._modelListeners.has(eventType))
+      return;
+
+    for (var i = 0; i < this._targets.length; ++i) {
+      var model = this._targets[i].model(modelClass);
+      if (model)
+        model.removeEventListener(eventType, listener, thisObject);
+    }
+
+    var listeners = this._modelListeners.get(eventType);
+    for (var i = 0; i < listeners.length; ++i) {
+      if (listeners[i].modelClass === modelClass && listeners[i].listener === listener &&
+          listeners[i].thisObject === thisObject)
+        listeners.splice(i--, 1);
+    }
+    if (!listeners.length)
+      this._modelListeners.delete(eventType);
+  }
+
+  /**
+   * @param {!WebInspector.TargetManager.Observer} targetObserver
+   * @param {number=} capabilitiesMask
+   */
+  observeTargets(targetObserver, capabilitiesMask) {
+    if (this._observerCapabiliesMaskSymbol in targetObserver)
+      throw new Error('Observer can only be registered once');
+    targetObserver[this._observerCapabiliesMaskSymbol] = capabilitiesMask || 0;
+    this.targets(capabilitiesMask).forEach(targetObserver.targetAdded.bind(targetObserver));
+    this._observers.push(targetObserver);
+  }
+
+  /**
+   * @param {!WebInspector.TargetManager.Observer} targetObserver
+   */
+  unobserveTargets(targetObserver) {
+    delete targetObserver[this._observerCapabiliesMaskSymbol];
+    this._observers.remove(targetObserver);
+  }
+
+  /**
+   * @param {string} name
+   * @param {number} capabilitiesMask
+   * @param {!InspectorBackendClass.Connection.Factory} connectionFactory
+   * @param {?WebInspector.Target} parentTarget
+   * @return {!WebInspector.Target}
+   */
+  createTarget(name, capabilitiesMask, connectionFactory, parentTarget) {
+    var target = new WebInspector.Target(this, name, capabilitiesMask, connectionFactory, parentTarget);
+
+    var logAgent = target.hasLogCapability() ? target.logAgent() : null;
+
+    /** @type {!WebInspector.ConsoleModel} */
+    target.consoleModel = new WebInspector.ConsoleModel(target, logAgent);
+
+    var networkManager = null;
+    var resourceTreeModel = null;
+    if (target.hasNetworkCapability())
+      networkManager = new WebInspector.NetworkManager(target);
+    if (networkManager && target.hasDOMCapability()) {
+      resourceTreeModel = new WebInspector.ResourceTreeModel(
+          target, networkManager, WebInspector.SecurityOriginManager.fromTarget(target));
+      new WebInspector.NetworkLog(target, resourceTreeModel, networkManager);
+    }
+
+    /** @type {!WebInspector.RuntimeModel} */
+    target.runtimeModel = new WebInspector.RuntimeModel(target);
+
+    if (target.hasJSCapability())
+      new WebInspector.DebuggerModel(target);
+
+    if (resourceTreeModel) {
+      var domModel = new WebInspector.DOMModel(target);
+      // TODO(eostroukhov) CSSModel should not depend on RTM
+      new WebInspector.CSSModel(target, domModel);
+    }
+
+    /** @type {?WebInspector.SubTargetsManager} */
+    target.subTargetsManager = target.hasTargetCapability() ? new WebInspector.SubTargetsManager(target) : null;
+    /** @type {!WebInspector.CPUProfilerModel} */
+    target.cpuProfilerModel = new WebInspector.CPUProfilerModel(target);
+    /** @type {!WebInspector.HeapProfilerModel} */
+    target.heapProfilerModel = new WebInspector.HeapProfilerModel(target);
+
+    target.tracingManager = new WebInspector.TracingManager(target);
+
+    if (target.subTargetsManager && target.hasBrowserCapability())
+      target.serviceWorkerManager = new WebInspector.ServiceWorkerManager(target, target.subTargetsManager);
+
+    this.addTarget(target);
+    return target;
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   * @return {!Array<!WebInspector.TargetManager.Observer>}
+   */
+  _observersForTarget(target) {
+    return this._observers.filter(
+        (observer) => target.hasAllCapabilities(observer[this._observerCapabiliesMaskSymbol] || 0));
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   */
+  addTarget(target) {
+    this._targets.push(target);
+    var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+    if (this._targets.length === 1 && resourceTreeModel) {
+      resourceTreeModel[WebInspector.TargetManager._listenersSymbol] = [
+        setupRedispatch.call(
+            this, WebInspector.ResourceTreeModel.Events.MainFrameNavigated,
+            WebInspector.TargetManager.Events.MainFrameNavigated),
+        setupRedispatch.call(this, WebInspector.ResourceTreeModel.Events.Load, WebInspector.TargetManager.Events.Load),
+        setupRedispatch.call(
+            this, WebInspector.ResourceTreeModel.Events.PageReloadRequested,
+            WebInspector.TargetManager.Events.PageReloadRequested),
+        setupRedispatch.call(
+            this, WebInspector.ResourceTreeModel.Events.WillReloadPage,
+            WebInspector.TargetManager.Events.WillReloadPage)
+      ];
+    }
+    var copy = this._observersForTarget(target);
+    for (var i = 0; i < copy.length; ++i)
+      copy[i].targetAdded(target);
+
+    for (var pair of this._modelListeners) {
+      var listeners = pair[1];
+      for (var i = 0; i < listeners.length; ++i) {
+        var model = target.model(listeners[i].modelClass);
+        if (model)
+          model.addEventListener(/** @type {symbol} */ (pair[0]), listeners[i].listener, listeners[i].thisObject);
+      }
+    }
+
+    /**
+     * @param {!WebInspector.ResourceTreeModel.Events} sourceEvent
+     * @param {!WebInspector.TargetManager.Events} targetEvent
+     * @return {!WebInspector.EventTarget.EventDescriptor}
+     * @this {WebInspector.TargetManager}
+     */
+    function setupRedispatch(sourceEvent, targetEvent) {
+      return resourceTreeModel.addEventListener(sourceEvent, this._redispatchEvent.bind(this, targetEvent));
+    }
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   */
+  removeTarget(target) {
+    if (!this._targets.includes(target))
+      return;
+    this._targets.remove(target);
+    var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+    var treeModelListeners = resourceTreeModel && resourceTreeModel[WebInspector.TargetManager._listenersSymbol];
+    if (treeModelListeners)
+      WebInspector.EventTarget.removeEventListeners(treeModelListeners);
+
+    var copy = this._observersForTarget(target);
+    for (var i = 0; i < copy.length; ++i)
+      copy[i].targetRemoved(target);
+
+    for (var pair of this._modelListeners) {
+      var listeners = pair[1];
+      for (var i = 0; i < listeners.length; ++i) {
+        var model = target.model(listeners[i].modelClass);
+        if (model)
+          model.removeEventListener(/** @type {symbol} */ (pair[0]), listeners[i].listener, listeners[i].thisObject);
+      }
+    }
+  }
+
+  /**
+   * @param {number=} capabilitiesMask
+   * @return {!Array.<!WebInspector.Target>}
+   */
+  targets(capabilitiesMask) {
+    if (!capabilitiesMask)
+      return this._targets.slice();
+    else
+      return this._targets.filter((target) => target.hasAllCapabilities(capabilitiesMask || 0));
+  }
+
+  /**
+   *
+   * @param {number} id
+   * @return {?WebInspector.Target}
+   */
+  targetById(id) {
+    for (var i = 0; i < this._targets.length; ++i) {
+      if (this._targets[i].id() === id)
+        return this._targets[i];
+    }
+    return null;
+  }
+
+  /**
+   * @return {?WebInspector.Target}
+   */
+  mainTarget() {
+    return this._targets[0] || null;
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   */
+  suspendReload(target) {
+    var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+    if (resourceTreeModel)
+      resourceTreeModel.suspendReload();
+  }
+
+  /**
+   * @param {!WebInspector.Target} target
+   */
+  resumeReload(target) {
+    var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
+    if (resourceTreeModel)
+      setImmediate(resourceTreeModel.resumeReload.bind(resourceTreeModel));
+  }
+
+  /**
+   * @param {function()} webSocketConnectionLostCallback
+   */
+  connectToMainTarget(webSocketConnectionLostCallback) {
+    this._webSocketConnectionLostCallback = webSocketConnectionLostCallback;
+    this._connectAndCreateMainTarget();
+  }
+
+  _connectAndCreateMainTarget() {
+    var capabilities = WebInspector.Target.Capability.Browser | WebInspector.Target.Capability.DOM |
+        WebInspector.Target.Capability.JS | WebInspector.Target.Capability.Log |
+        WebInspector.Target.Capability.Network | WebInspector.Target.Capability.Target;
+    if (Runtime.queryParam('isSharedWorker')) {
+      capabilities = WebInspector.Target.Capability.Browser | WebInspector.Target.Capability.Log |
+          WebInspector.Target.Capability.Network | WebInspector.Target.Capability.Target;
+    } else if (Runtime.queryParam('v8only')) {
+      capabilities = WebInspector.Target.Capability.JS;
+    }
+
+    var target =
+        this.createTarget(WebInspector.UIString('Main'), capabilities, this._createMainConnection.bind(this), null);
+    target.runtimeAgent().runIfWaitingForDebugger();
+  }
+
+  /**
+   * @param {!InspectorBackendClass.Connection.Params} params
+   * @return {!InspectorBackendClass.Connection}
+   */
+  _createMainConnection(params) {
+    if (Runtime.queryParam('ws')) {
+      var ws = 'ws://' + Runtime.queryParam('ws');
+      this._mainConnection = new WebInspector.WebSocketConnection(ws, this._webSocketConnectionLostCallback, params);
+    } else if (InspectorFrontendHost.isHostedMode()) {
+      this._mainConnection = new WebInspector.StubConnection(params);
+    } else {
+      this._mainConnection = new WebInspector.MainConnection(params);
+    }
+    return this._mainConnection;
+  }
+
+  /**
+   * @param {function(string)} onMessage
+   * @return {!Promise<!InspectorBackendClass.Connection>}
+   */
+  interceptMainConnection(onMessage) {
+    var params = {onMessage: onMessage, onDisconnect: this._connectAndCreateMainTarget.bind(this)};
+    return this._mainConnection.disconnect().then(this._createMainConnection.bind(this, params));
+  }
 };
 
 /** @enum {symbol} */
 WebInspector.TargetManager.Events = {
-    InspectedURLChanged: Symbol("InspectedURLChanged"),
-    Load: Symbol("Load"),
-    MainFrameNavigated: Symbol("MainFrameNavigated"),
-    NameChanged: Symbol("NameChanged"),
-    PageReloadRequested: Symbol("PageReloadRequested"),
-    WillReloadPage: Symbol("WillReloadPage"),
-    TargetDisposed: Symbol("TargetDisposed"),
-    SuspendStateChanged: Symbol("SuspendStateChanged")
+  InspectedURLChanged: Symbol('InspectedURLChanged'),
+  Load: Symbol('Load'),
+  MainFrameNavigated: Symbol('MainFrameNavigated'),
+  NameChanged: Symbol('NameChanged'),
+  PageReloadRequested: Symbol('PageReloadRequested'),
+  WillReloadPage: Symbol('WillReloadPage'),
+  TargetDisposed: Symbol('TargetDisposed'),
+  SuspendStateChanged: Symbol('SuspendStateChanged')
 };
 
-WebInspector.TargetManager._listenersSymbol = Symbol("WebInspector.TargetManager.Listeners");
-
-WebInspector.TargetManager.prototype = {
-    suspendAllTargets: function()
-    {
-        if (this._isSuspended)
-            return;
-        this._isSuspended = true;
-        this.dispatchEventToListeners(WebInspector.TargetManager.Events.SuspendStateChanged);
-
-        for (var i = 0; i < this._targets.length; ++i) {
-            for (var model of this._targets[i].models())
-                model.suspendModel();
-        }
-    },
-
-    /**
-     * @return {!Promise}
-     */
-    resumeAllTargets: function()
-    {
-        if (!this._isSuspended)
-            throw new Error("Not suspended");
-        this._isSuspended = false;
-        this.dispatchEventToListeners(WebInspector.TargetManager.Events.SuspendStateChanged);
-
-        var promises = [];
-        for (var i = 0; i < this._targets.length; ++i) {
-            for (var model of this._targets[i].models())
-                promises.push(model.resumeModel());
-        }
-        return Promise.all(promises);
-    },
-
-    suspendAndResumeAllTargets: function()
-    {
-        this.suspendAllTargets();
-        this.resumeAllTargets();
-    },
-
-    /**
-     * @return {boolean}
-     */
-    allTargetsSuspended: function()
-    {
-        return this._isSuspended;
-    },
-
-    /**
-     * @return {string}
-     */
-    inspectedURL: function()
-    {
-        return this._targets[0] ? this._targets[0].inspectedURL() : "";
-    },
-
-    /**
-     * @param {!WebInspector.TargetManager.Events} eventName
-     * @param {!WebInspector.Event} event
-     */
-    _redispatchEvent: function(eventName, event)
-    {
-        this.dispatchEventToListeners(eventName, event.data);
-    },
-
-    /**
-     * @param {boolean=} bypassCache
-     * @param {string=} injectedScript
-     */
-    reloadPage: function(bypassCache, injectedScript)
-    {
-        if (!this._targets.length)
-            return;
-
-        var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(this._targets[0]);
-        if (!resourceTreeModel)
-            return;
-
-        resourceTreeModel.reloadPage(bypassCache, injectedScript);
-    },
-
-    /**
-     * @param {!Function} modelClass
-     * @param {symbol} eventType
-     * @param {function(!WebInspector.Event)} listener
-     * @param {!Object=} thisObject
-     */
-    addModelListener: function(modelClass, eventType, listener, thisObject)
-    {
-        for (var i = 0; i < this._targets.length; ++i) {
-            var model = this._targets[i].model(modelClass);
-            if (model)
-                model.addEventListener(eventType, listener, thisObject);
-        }
-        if (!this._modelListeners.has(eventType))
-            this._modelListeners.set(eventType, []);
-        this._modelListeners.get(eventType).push({ modelClass: modelClass, thisObject: thisObject, listener: listener });
-    },
-
-    /**
-     * @param {!Function} modelClass
-     * @param {symbol} eventType
-     * @param {function(!WebInspector.Event)} listener
-     * @param {!Object=} thisObject
-     */
-    removeModelListener: function(modelClass, eventType, listener, thisObject)
-    {
-        if (!this._modelListeners.has(eventType))
-            return;
-
-        for (var i = 0; i < this._targets.length; ++i) {
-            var model = this._targets[i].model(modelClass);
-            if (model)
-                model.removeEventListener(eventType, listener, thisObject);
-        }
-
-        var listeners = this._modelListeners.get(eventType);
-        for (var i = 0; i < listeners.length; ++i) {
-            if (listeners[i].modelClass === modelClass && listeners[i].listener === listener && listeners[i].thisObject === thisObject)
-                listeners.splice(i--, 1);
-        }
-        if (!listeners.length)
-            this._modelListeners.delete(eventType);
-    },
-
-    /**
-     * @param {!WebInspector.TargetManager.Observer} targetObserver
-     * @param {number=} capabilitiesMask
-     */
-    observeTargets: function(targetObserver, capabilitiesMask)
-    {
-        if (this._observerCapabiliesMaskSymbol in targetObserver)
-            throw new Error("Observer can only be registered once");
-        targetObserver[this._observerCapabiliesMaskSymbol] = capabilitiesMask || 0;
-        this.targets(capabilitiesMask).forEach(targetObserver.targetAdded.bind(targetObserver));
-        this._observers.push(targetObserver);
-    },
-
-    /**
-     * @param {!WebInspector.TargetManager.Observer} targetObserver
-     */
-    unobserveTargets: function(targetObserver)
-    {
-        delete targetObserver[this._observerCapabiliesMaskSymbol];
-        this._observers.remove(targetObserver);
-    },
-
-    /**
-     * @param {string} name
-     * @param {number} capabilitiesMask
-     * @param {!InspectorBackendClass.Connection.Factory} connectionFactory
-     * @param {?WebInspector.Target} parentTarget
-     * @return {!WebInspector.Target}
-     */
-    createTarget: function(name, capabilitiesMask, connectionFactory, parentTarget)
-    {
-        var target = new WebInspector.Target(this, name, capabilitiesMask, connectionFactory, parentTarget);
-
-        var logAgent = target.hasLogCapability() ? target.logAgent() : null;
-
-        /** @type {!WebInspector.ConsoleModel} */
-        target.consoleModel = new WebInspector.ConsoleModel(target, logAgent);
-
-        var networkManager = null;
-        var resourceTreeModel = null;
-        if (target.hasNetworkCapability())
-            networkManager = new WebInspector.NetworkManager(target);
-        if (networkManager && target.hasDOMCapability()) {
-            resourceTreeModel = new WebInspector.ResourceTreeModel(target, networkManager, WebInspector.SecurityOriginManager.fromTarget(target));
-            new WebInspector.NetworkLog(target, resourceTreeModel, networkManager);
-        }
-
-        /** @type {!WebInspector.RuntimeModel} */
-        target.runtimeModel = new WebInspector.RuntimeModel(target);
-
-        if (target.hasJSCapability())
-            new WebInspector.DebuggerModel(target);
-
-        if (resourceTreeModel) {
-            var domModel = new WebInspector.DOMModel(target);
-            // TODO(eostroukhov) CSSModel should not depend on RTM
-            new WebInspector.CSSModel(target, domModel);
-        }
-
-        /** @type {?WebInspector.SubTargetsManager} */
-        target.subTargetsManager = target.hasTargetCapability() ? new WebInspector.SubTargetsManager(target) : null;
-        /** @type {!WebInspector.CPUProfilerModel} */
-        target.cpuProfilerModel = new WebInspector.CPUProfilerModel(target);
-        /** @type {!WebInspector.HeapProfilerModel} */
-        target.heapProfilerModel = new WebInspector.HeapProfilerModel(target);
-
-        target.tracingManager = new WebInspector.TracingManager(target);
-
-        if (target.subTargetsManager && target.hasBrowserCapability())
-            target.serviceWorkerManager = new WebInspector.ServiceWorkerManager(target, target.subTargetsManager);
-
-        this.addTarget(target);
-        return target;
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     * @return {!Array<!WebInspector.TargetManager.Observer>}
-     */
-    _observersForTarget: function(target)
-    {
-        return this._observers.filter((observer) => target.hasAllCapabilities(observer[this._observerCapabiliesMaskSymbol] || 0));
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    addTarget: function(target)
-    {
-        this._targets.push(target);
-        var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
-        if (this._targets.length === 1 && resourceTreeModel) {
-            resourceTreeModel[WebInspector.TargetManager._listenersSymbol] = [
-                setupRedispatch.call(this, WebInspector.ResourceTreeModel.Events.MainFrameNavigated, WebInspector.TargetManager.Events.MainFrameNavigated),
-                setupRedispatch.call(this, WebInspector.ResourceTreeModel.Events.Load, WebInspector.TargetManager.Events.Load),
-                setupRedispatch.call(this, WebInspector.ResourceTreeModel.Events.PageReloadRequested, WebInspector.TargetManager.Events.PageReloadRequested),
-                setupRedispatch.call(this, WebInspector.ResourceTreeModel.Events.WillReloadPage, WebInspector.TargetManager.Events.WillReloadPage)
-            ];
-        }
-        var copy = this._observersForTarget(target);
-        for (var i = 0; i < copy.length; ++i)
-            copy[i].targetAdded(target);
-
-        for (var pair of this._modelListeners) {
-            var listeners = pair[1];
-            for (var i = 0; i < listeners.length; ++i) {
-                var model = target.model(listeners[i].modelClass);
-                if (model)
-                    model.addEventListener(/** @type {symbol} */ (pair[0]), listeners[i].listener, listeners[i].thisObject);
-            }
-        }
-
-        /**
-         * @param {!WebInspector.ResourceTreeModel.Events} sourceEvent
-         * @param {!WebInspector.TargetManager.Events} targetEvent
-         * @return {!WebInspector.EventTarget.EventDescriptor}
-         * @this {WebInspector.TargetManager}
-         */
-        function setupRedispatch(sourceEvent, targetEvent)
-        {
-            return resourceTreeModel.addEventListener(sourceEvent, this._redispatchEvent.bind(this, targetEvent));
-        }
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    removeTarget: function(target)
-    {
-        if (!this._targets.includes(target))
-            return;
-        this._targets.remove(target);
-        var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
-        var treeModelListeners = resourceTreeModel && resourceTreeModel[WebInspector.TargetManager._listenersSymbol];
-        if (treeModelListeners)
-            WebInspector.EventTarget.removeEventListeners(treeModelListeners);
-
-        var copy = this._observersForTarget(target);
-        for (var i = 0; i < copy.length; ++i)
-            copy[i].targetRemoved(target);
-
-        for (var pair of this._modelListeners) {
-            var listeners = pair[1];
-            for (var i = 0; i < listeners.length; ++i) {
-                var model = target.model(listeners[i].modelClass);
-                if (model)
-                    model.removeEventListener(/** @type {symbol} */ (pair[0]), listeners[i].listener, listeners[i].thisObject);
-            }
-        }
-    },
-
-    /**
-     * @param {number=} capabilitiesMask
-     * @return {!Array.<!WebInspector.Target>}
-     */
-    targets: function(capabilitiesMask)
-    {
-        if (!capabilitiesMask)
-            return this._targets.slice();
-        else
-            return this._targets.filter((target) => target.hasAllCapabilities(capabilitiesMask || 0));
-    },
-
-    /**
-     *
-     * @param {number} id
-     * @return {?WebInspector.Target}
-     */
-    targetById: function(id)
-    {
-        for (var i = 0; i < this._targets.length; ++i) {
-            if (this._targets[i].id() === id)
-                return this._targets[i];
-        }
-        return null;
-    },
-
-    /**
-     * @return {?WebInspector.Target}
-     */
-    mainTarget: function()
-    {
-        return this._targets[0] || null;
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    suspendReload: function(target)
-    {
-        var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
-        if (resourceTreeModel)
-            resourceTreeModel.suspendReload();
-    },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    resumeReload: function(target)
-    {
-        var resourceTreeModel = WebInspector.ResourceTreeModel.fromTarget(target);
-        if (resourceTreeModel)
-            setImmediate(resourceTreeModel.resumeReload.bind(resourceTreeModel));
-    },
-
-    /**
-     * @param {function()} webSocketConnectionLostCallback
-     */
-    connectToMainTarget: function(webSocketConnectionLostCallback)
-    {
-        this._webSocketConnectionLostCallback = webSocketConnectionLostCallback;
-        this._connectAndCreateMainTarget();
-    },
-
-    _connectAndCreateMainTarget: function()
-    {
-        var capabilities =
-            WebInspector.Target.Capability.Browser | WebInspector.Target.Capability.DOM |
-            WebInspector.Target.Capability.JS | WebInspector.Target.Capability.Log |
-            WebInspector.Target.Capability.Network | WebInspector.Target.Capability.Target;
-        if (Runtime.queryParam("isSharedWorker")) {
-            capabilities =
-                WebInspector.Target.Capability.Browser | WebInspector.Target.Capability.Log |
-                WebInspector.Target.Capability.Network | WebInspector.Target.Capability.Target;
-        } else if (Runtime.queryParam("v8only")) {
-            capabilities = WebInspector.Target.Capability.JS;
-        }
-
-        var target = this.createTarget(WebInspector.UIString("Main"), capabilities, this._createMainConnection.bind(this), null);
-        target.runtimeAgent().runIfWaitingForDebugger();
-    },
-
-    /**
-     * @param {!InspectorBackendClass.Connection.Params} params
-     * @return {!InspectorBackendClass.Connection}
-     */
-    _createMainConnection: function(params)
-    {
-        if (Runtime.queryParam("ws")) {
-            var ws = "ws://" + Runtime.queryParam("ws");
-            this._mainConnection = new WebInspector.WebSocketConnection(ws, this._webSocketConnectionLostCallback, params);
-        } else if (InspectorFrontendHost.isHostedMode()) {
-            this._mainConnection = new WebInspector.StubConnection(params);
-        } else {
-            this._mainConnection = new WebInspector.MainConnection(params);
-        }
-        return this._mainConnection;
-    },
-
-    /**
-     * @param {function(string)} onMessage
-     * @return {!Promise<!InspectorBackendClass.Connection>}
-     */
-    interceptMainConnection: function(onMessage)
-    {
-        var params = {
-            onMessage: onMessage,
-            onDisconnect: this._connectAndCreateMainTarget.bind(this)
-        };
-        return this._mainConnection.disconnect().then(this._createMainConnection.bind(this, params));
-    },
-
-    __proto__: WebInspector.Object.prototype
-};
+WebInspector.TargetManager._listenersSymbol = Symbol('WebInspector.TargetManager.Listeners');
 
 /**
  * @interface
  */
-WebInspector.TargetManager.Observer = function()
-{
+WebInspector.TargetManager.Observer = function() {};
+
+WebInspector.TargetManager.Observer.prototype = {
+  /**
+   * @param {!WebInspector.Target} target
+   */
+  targetAdded: function(target) {},
+
+  /**
+   * @param {!WebInspector.Target} target
+   */
+  targetRemoved: function(target) {},
 };
 
-WebInspector.TargetManager.Observer.prototype = {
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    targetAdded: function(target) { },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    targetRemoved: function(target) { },
-};
-
 /**
  * @type {!WebInspector.TargetManager}
  */
 WebInspector.targetManager = new WebInspector.TargetManager();