The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3d0b06fe16bd256cc1dbe768d5b6d43c20f3f1ec

commit 3d0b06fe16bd256cc1dbe768d5b6d43c20f3f1ec
Author: rtoy <rtoy@chromium.org>
Date: Fri Dec 02 19:29:47 2016

Throw RangeError for invalid refDistance/maxDistance

The PannerNode refDistance and maxDistance attributes must throw a
RangeError on attempts to set either to a non-positive value.

BUG= 666396 
TEST=panner-distance-clamping.html

Review-Url: https://codereview.chromium.org/2512793003
Cr-Commit-Position: refs/heads/master@{#435993}

[modify] https://crrev.com/3d0b06fe16bd256cc1dbe768d5b6d43c20f3f1ec/third_party/WebKit/LayoutTests/webaudio/panner-distance-clamping.html
[modify] https://crrev.com/3d0b06fe16bd256cc1dbe768d5b6d43c20f3f1ec/third_party/WebKit/Source/modules/webaudio/PannerNode.cpp
[modify] https://crrev.com/3d0b06fe16bd256cc1dbe768d5b6d43c20f3f1ec/third_party/WebKit/Source/modules/webaudio/PannerNode.h
[modify] https://crrev.com/3d0b06fe16bd256cc1dbe768d5b6d43c20f3f1ec/third_party/WebKit/Source/modules/webaudio/PannerNode.idl