Implement AudioScheduledSourceNode

third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.idl

Index: third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.idl
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.idl b/third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.idl
index bc199b8312c9e418694fb8391ea092621f8c4b49..f5c47e7acb061879468eba9e15986207c69435df 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.idl
+++ b/third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.idl
@@ -29,8 +29,9 @@
     Constructor(BaseAudioContext context, optional AudioBufferSourceOptions options),
     RaisesException=Constructor,
     ActiveScriptWrappable,
+    DependentLifetime
 ]
-interface AudioBufferSourceNode : AudioSourceNode {
+interface AudioBufferSourceNode : AudioScheduledSourceNode {
     [RaisesException=Setter] attribute AudioBuffer buffer;
 
     readonly attribute AudioParam playbackRate;
@@ -40,8 +41,6 @@ interface AudioBufferSourceNode : AudioSourceNode {
     attribute double loopStart;
     attribute double loopEnd;
 
-    [RaisesException] void start(optional double when, optional double grainOffset, optional double grainDuration);
-    [RaisesException] void stop(optional double when);
+    [RaisesException] void start(optional double when = 0, optional double grainOffset, optional double grainDuration);
 
-    attribute EventHandler onended;
 };