Some PannerOptions dictionary members should be doubles

third_party/WebKit/Source/modules/webaudio/PannerOptions.idl

 // Copyright 2016 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.
 
 // See https://webaudio.github.io/web-audio-api/#panneroptions
 dictionary PannerOptions : AudioNodeOptions {
     PanningModelType panningModel;
     DistanceModelType distanceModel;
 
     float positionX;
     float positionY;
     float positionZ;
     float orientationX;
     float orientationY;
     float orientationZ;
 
-    float refDistance;
-    float maxDistance;
-    float rolloffFactor;
-    float coneInnerAngle;
-    float coneOuterAngle;
-    float coneOuterGain;
+    double refDistance;
+    double maxDistance;
+    double rolloffFactor;
+    double coneInnerAngle;
+    double coneOuterAngle;
+    double coneOuterGain;
 };