Remove AnimationEffectTimingProperties playbackRate

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 18ee044980f55b3cf7ecdcab7408b76ecd36e553..1c49a82014b32542c710a7a77956ac365a5d4d48 100644
--- a/third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js
@@ -467,14 +467,6 @@ WebInspector.AnimationModel.AnimationEffect.prototype = {
     /**
      * @return {number}
      */
-    playbackRate: function()
-    {
-        return this._payload.playbackRate;
-    },
-
-    /**
-     * @return {number}
-     */
     iterationStart: function()
     {
         return this._payload.iterationStart;