Roll WebCore IDL to multivm@418

third_party/WebCore/Modules/webaudio/AudioContext.idl

Index: third_party/WebCore/Modules/webaudio/AudioContext.idl
diff --git a/third_party/WebCore/Modules/webaudio/AudioContext.idl b/third_party/WebCore/Modules/webaudio/AudioContext.idl
index 1f81d66383cafae88984803618445f210f51ea16..1d0228848bdcb648f03ec213fb86d552706ddb98 100644
--- a/third_party/WebCore/Modules/webaudio/AudioContext.idl
+++ b/third_party/WebCore/Modules/webaudio/AudioContext.idl
@@ -71,14 +71,17 @@ module webaudio {
         ConvolverNode createConvolver();
         DynamicsCompressorNode createDynamicsCompressor();
         RealtimeAnalyserNode createAnalyser();
-        JavaScriptAudioNode createJavaScriptNode(in unsigned long bufferSize);
+        JavaScriptAudioNode createJavaScriptNode(in unsigned long bufferSize, in [Optional] unsigned long numberOfInputChannels, in [Optional] unsigned long numberOfOutputChannels)
+            raises(DOMException);
         Oscillator createOscillator();
         WaveTable createWaveTable(in Float32Array real, in Float32Array imag)
             raises(DOMException);
 
         // Channel splitting and merging
-        AudioChannelSplitter createChannelSplitter();
-        AudioChannelMerger createChannelMerger();
+        AudioChannelSplitter createChannelSplitter(in [Optional] unsigned long numberOfOutputs)
+            raises(DOMException);
+        AudioChannelMerger createChannelMerger(in [Optional] unsigned long numberOfInputs)
+            raises(DOMException);
 
         // Offline rendering
         // void prepareOfflineBufferRendering(in unsigned long numberOfChannels, in unsigned long numberOfFrames, in float sampleRate);