Replace ASSERT with DCHECK in WebAudio

third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp

Index: third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp b/third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp
index c0046ed6be52bd0d75837b9971810c644c701c62..5f6b5f17a8f0c471e11f08f69efdeb13e091d723 100644
--- a/third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/WaveShaperNode.cpp
@@ -59,7 +59,7 @@ WaveShaperProcessor* WaveShaperNode::getWaveShaperProcessor() const
 
 void WaveShaperNode::setCurve(DOMFloat32Array* curve, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     if (curve && curve->length() < 2) {
         exceptionState.throwDOMException(
@@ -81,7 +81,7 @@ DOMFloat32Array* WaveShaperNode::curve()
 
 void WaveShaperNode::setOversample(const String& type)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     // This is to synchronize with the changes made in
     // AudioBasicProcessorNode::checkNumberOfChannelsForInput() where we can