Check for NaN when creating a DelayNode for WebAudio

Source/modules/webaudio/DelayNode.cpp

Index: Source/modules/webaudio/DelayNode.cpp
diff --git a/Source/modules/webaudio/DelayNode.cpp b/Source/modules/webaudio/DelayNode.cpp
index 7a8817ee82e2d07530da46c9d099f1a9018e4666..55c6337635ea244d45bc023756630af9aa65ba7b 100644
--- a/Source/modules/webaudio/DelayNode.cpp
+++ b/Source/modules/webaudio/DelayNode.cpp
@@ -31,6 +31,7 @@
 #include "bindings/v8/ExceptionMessages.h"
 #include "bindings/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
+#include "wtf/MathExtras.h"
 
 namespace WebCore {
 
@@ -40,7 +41,7 @@ DelayNode::DelayNode(AudioContext* context, float sampleRate, double maxDelayTim
     : AudioBasicProcessorNode(context, sampleRate)
 {
     ScriptWrappable::init(this);
-    if (maxDelayTime <= 0 || maxDelayTime >= maximumAllowedDelayTime) {
+    if (maxDelayTime <= 0 || maxDelayTime >= maximumAllowedDelayTime || std::isnan(maxDelayTime)) {
         exceptionState.throwDOMException(
             NotSupportedError,
             "max delay time (" + String::number(maxDelayTime)