Devtools: Move animation to separate module

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.
 
 
 /**
  * @constructor
  * @extends {WebInspector.SDKModel}
  * @param {!WebInspector.Target} target
  */
@@ skipping 64 matching lines @@
     {
         if (this._enabled)
             return;
         this._agent.enable();
         this._enabled = true;
     },
 
     __proto__: WebInspector.SDKModel.prototype
 }
 
+WebInspector.AnimationModel._symbol = Symbol("AnimationModel");
+
+/**
+ * @param {!WebInspector.Target} target
+ * @return {!WebInspector.AnimationModel}
+ */
+WebInspector.AnimationModel.fromTarget = function(target)
+{
+    if (!target[WebInspector.AnimationModel._symbol])
+        target[WebInspector.AnimationModel._symbol] = new WebInspector.AnimationModel(target);
+
+    return target[WebInspector.AnimationModel._symbol];
+}
+
 /**
  * @constructor
  * @extends {WebInspector.SDKObject}
  * @param {!WebInspector.Target} target
  * @param {!AnimationAgent.AnimationPlayer} payload
  */
 WebInspector.AnimationModel.AnimationPlayer = function(target, payload)
 {
     WebInspector.SDKObject.call(this, target);
     this._payload = payload;
@@ skipping 380 matching lines @@
 
     /**
      * @override
      * @param {string} playerId
      */
     animationPlayerCanceled: function(playerId)
     {
         this._animationModel.animationPlayerCanceled(playerId);
     }
 }