Rename ExceptionCode constants to use the names in the spec (2/3)

Source/modules/webaudio/WaveShaperNode.cpp

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 45 matching lines @@
 
 void WaveShaperNode::setOversample(const String& type, ExceptionCode& ec)
 {
     if (type == "none")
         waveShaperProcessor()->setOversample(WaveShaperProcessor::OverSampleNone);
     else if (type == "2x")
         waveShaperProcessor()->setOversample(WaveShaperProcessor::OverSample2x);
     else if (type == "4x")
         waveShaperProcessor()->setOversample(WaveShaperProcessor::OverSample4x);
     else
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
 }
 
 String WaveShaperNode::oversample() const
 {
     switch (const_cast<WaveShaperNode*>(this)->waveShaperProcessor()->oversample()) {
     case WaveShaperProcessor::OverSampleNone:
         return "none";
     case WaveShaperProcessor::OverSample2x:
         return "2x";
     case WaveShaperProcessor::OverSample4x:
         return "4x";
     default:
         ASSERT_NOT_REACHED();
         return "none";
     }
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)