Made AudioNode an EventTarget

Source/modules/webaudio/ScriptProcessorNode.idl

Index: Source/modules/webaudio/ScriptProcessorNode.idl
diff --git a/Source/modules/webaudio/ScriptProcessorNode.idl b/Source/modules/webaudio/ScriptProcessorNode.idl
index b0d6535e877987b837b639972eacdcfadb53b4cc..4d80d1343e36d1d5d51f9b35de35d3ae9b919aee 100644
--- a/Source/modules/webaudio/ScriptProcessorNode.idl
+++ b/Source/modules/webaudio/ScriptProcessorNode.idl
@@ -22,13 +22,12 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-// For real-time audio stream synthesis/processing in JavaScript 
+// For real-time audio stream synthesis/processing in JavaScript
 [
-    Conditional=WEB_AUDIO,
-    EventTarget
+    Conditional=WEB_AUDIO
 ] interface ScriptProcessorNode : AudioNode {
     // Rendering callback
     attribute EventListener onaudioprocess;
-    
+
     readonly attribute long bufferSize;
 };