Allow Panner.refDistance to be 0

third_party/WebKit/Source/modules/webaudio/PannerNode.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 730 matching lines @@
 void PannerNode::setDistanceModel(const String& model) {
   GetPannerHandler().SetDistanceModel(model);
 }
 
 double PannerNode::refDistance() const {
   return GetPannerHandler().RefDistance();
 }
 
 void PannerNode::setRefDistance(double distance,
                                 ExceptionState& exception_state) {
-  if (distance <= 0) {
+  if (distance < 0) {
     exception_state.ThrowDOMException(
         kV8RangeError, ExceptionMessages::IndexExceedsMinimumBound<double>(
                            "refDistance", distance, 0));
     return;
   }
 
   GetPannerHandler().SetRefDistance(distance);
 }
 
 double PannerNode::maxDistance() const {
@@ skipping 50 matching lines @@
   visitor->Trace(position_z_);
 
   visitor->Trace(orientation_x_);
   visitor->Trace(orientation_y_);
   visitor->Trace(orientation_z_);
 
   AudioNode::Trace(visitor);
 }
 
 }  // namespace blink