[DevTools] Do not expose agents on Target

third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js

 // Copyright (c) 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.
 
 /**
  * @unrestricted
  */
 Animation.AnimationModel = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
+   * @param {!Protocol.Dispatcher} dispatcher
    */
-  constructor(target) {
-    super(target);
+  constructor(target, dispatcher) {
+    super(target, dispatcher);
     this._runtimeModel = /** @type {!SDK.RuntimeModel} */ (target.model(SDK.RuntimeModel));
-    this._agent = target.animationAgent();
-    target.registerAnimationDispatcher(new Animation.AnimationDispatcher(this));
+    this._agent = dispatcher.animationAgent();
+    dispatcher.registerAnimationDispatcher(new Animation.AnimationDispatcher(this));
     /** @type {!Map.<string, !Animation.AnimationModel.Animation>} */
     this._animationsById = new Map();
     /** @type {!Map.<string, !Animation.AnimationModel.AnimationGroup>} */
     this._animationGroups = new Map();
     /** @type {!Array.<string>} */
     this._pendingAnimations = [];
     this._playbackRate = 1;
     var resourceTreeModel = /** @type {!SDK.ResourceTreeModel} */ (target.model(SDK.ResourceTreeModel));
     resourceTreeModel.addEventListener(SDK.ResourceTreeModel.Events.MainFrameNavigated, this._reset, this);
     var screenCaptureModel = target.model(SDK.ScreenCaptureModel);
@@ skipping 808 matching lines @@
     delete this._stopTimer;
     delete this._endTime;
     this._requests = [];
     this._capturing = false;
     this._screenCaptureModel.stopScreencast();
   }
 };
 
 /** @typedef {{ endTime: number, screenshots: !Array.<string>}} */
 Animation.AnimationModel.ScreenshotCapture.Request;