| Index: third_party/WebKit/Source/modules/webaudio/AudioBuffer.idl | 
| diff --git a/third_party/WebKit/Source/modules/webaudio/AudioBuffer.idl b/third_party/WebKit/Source/modules/webaudio/AudioBuffer.idl | 
| index 264ed2b6016aede3c1ebf9039fca06f6c55f6817..3999ff61623e38d015307111c693cf1d1f2f2b5d 100644 | 
| --- a/third_party/WebKit/Source/modules/webaudio/AudioBuffer.idl | 
| +++ b/third_party/WebKit/Source/modules/webaudio/AudioBuffer.idl | 
| @@ -37,6 +37,6 @@ | 
| // Channel access | 
| readonly attribute unsigned long numberOfChannels; | 
| [RaisesException] Float32Array getChannelData(unsigned long channelIndex); | 
| -    [RaisesException, LegacyInterfaceTypeChecking] void copyFromChannel(Float32Array destination, long channelNumber, optional unsigned long startInChannel = 0); | 
| -    [RaisesException, LegacyInterfaceTypeChecking] void copyToChannel(Float32Array source, long channelNumber, optional unsigned long startInChannel = 0); | 
| +    [RaisesException] void copyFromChannel(Float32Array destination, long channelNumber, optional unsigned long startInChannel = 0); | 
| +    [RaisesException] void copyToChannel(Float32Array source, long channelNumber, optional unsigned long startInChannel = 0); | 
| }; | 
|  |