Chrome Version       : 52.0.2743.116
URLs (if applicable) : https://codereview.chromium.org/25660014/
OS version           : OS X 10.10.5 (14F1808 
Network (such as Cable/DSL/Dial up etc): Cable
Audio/Video format (if applicable): WAV ALAW
Special chrome flags (if applicable): –

Behavior in Safari (if known): returns wrong value
Behavior in Firefox (if known): returns proper value

Video issue, Audio issue, both, neither? Audio issue

Flash or HTML5?  HTML5

If the browser or renderer crashed (“Aw, Snap”), please add any crash
IDs from chrome://crashes  (possibly after enabling crash reporting per
http://support.google.com/chrome/bin/answer.py?hl=en&answer=96817)

What steps will reproduce the problem?
(1) var myAudio = document.createElement('audio'); 
(2) myAudio.canPlayType('audio/wav; codecs="1"'); // Returns "probably". That's correct!
(3) myAudio.canPlayType('audio/wav; codecs="6"'); // Returns "" (i.e., not supported). That's not true, it's supported

What is the expected result? myAudio.canPlayType('audio/wav; codecs="6"') should return "probably" (see https://codereview.chromium.org/25660014/) 

What is the actual result? myAudio.canPlayType('audio/wav; codecs="6"') returns ""

Any additional information (anything else which may help us debug the
issue)? The ALAW codec is fully supported by the browser but when checked programmatically, the API says it doesn't


Please attach the HTML5/JavaScript code or audio/video files as well as
screenshot and/or videos (if applicable) 
A-LAW sample: http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/Samples/AFsp/M1F1-Alaw-AFsp.wav