[DevTools] Do not expose agents on Target

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

Index: third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js b/third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js
index b1c2e7394517f9d41dd00241dab34172b958f668..3109bedb4f53b7bf1da9989fc3099d2cf68e25f4 100644
--- a/third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js
@@ -8,12 +8,13 @@
 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>} */