commit 5b2c345c7e535ca7e4024eb09fedda3b30b9b924
author hongchan <hongchan@chromium.org> Mon Nov 30 20:49:41 2015
committer Commit bot <commit-bot@chromium.org> Mon Nov 30 20:50:45 2015
tree 46f704be36b1c97d5f2a688ee637f84ceaa3845c
parent 72526836cb6c3f20395fdd4fb36b2da1dd421715

Support multichannel audio stream more than 2 in MediaStreamDestinationNode

WebAudioCapturerSource does not have the support for multichannel audio bus
greater than 2. This CL is to implement the support up to 8 channels in
WebAudioCapturerSource, also put checks/blocks in MediaStreamDestinationNode
before passing the multichannel audio bus.

I also discovered the flakiness of onended event in OscillatorNode while I was creating a manual test for this CL:  https://code.google.com/p/chromium/issues/detail?id=559220

BUG=557185
TEST=
LayoutTests/webaudio/mediastreamaudiodestinationnode.html
ManualTests/webaudio/multichannel-mediastreamdestination.html

Review URL: https://codereview.chromium.org/1464673002

Cr-Commit-Position: refs/heads/master@{#362215}