https://bugs.webkit.org/show_bug.cgi?id=116798

Reviewed by Eric Carlson.

Source/WebCore:

Tests: webaudio/audiobuffersource-ended.html
       webaudio/oscillator-ended.html

* Modules/webaudio/AudioScheduledSourceNode.cpp:
(WebCore::AudioScheduledSourceNode::AudioScheduledSourceNode):
(WebCore::AudioScheduledSourceNode::setOnended): Set m_hasEndedListener.
(WebCore::AudioScheduledSourceNode::finish): Call notifyEndedDispatch on the main thread.
(WebCore::AudioScheduledSourceNode::notifyEndedDispatch): Call notifyEnded().
(WebCore::AudioScheduledSourceNode::notifyEnded): Call the onended event listener.
* Modules/webaudio/AudioScheduledSourceNode.h:
(WebCore::AudioScheduledSourceNode::onended): Added boilerplate.
* Modules/webaudio/AudioBufferSourceNode.idl: Added the onerror attribute.
* Modules/webaudio/OscillatorNode.idl: Ditto.

LayoutTests:

* webaudio/audiobuffersource-ended-expected.txt: Added.
* webaudio/audiobuffersource-ended.html: Added.
* webaudio/oscillator-ended-expected.txt: Added.
* webaudio/oscillator-ended.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@150905 268f45cc-cd09-0410-ab3c-d52691b4dbfc