WebAudio: Remove legacy support for numerical values for Oscillator types.

Source/modules/webaudio/OscillatorNode.cpp

 /*
  * Copyright (C) 2012, 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 89 matching lines @@
 void OscillatorNode::setType(const String& type)
 {
     if (type == "sine")
         setType(SINE);
     else if (type == "square")
         setType(SQUARE);
     else if (type == "sawtooth")
         setType(SAWTOOTH);
     else if (type == "triangle")
         setType(TRIANGLE);
-    else
-        ASSERT_NOT_REACHED();
 }
 
 bool OscillatorNode::setType(unsigned type)
 {
     PeriodicWave* periodicWave = 0;
     float sampleRate = this->sampleRate();
 
     switch (type) {
     case SINE: {
         DEFINE_STATIC_REF(PeriodicWave, periodicWaveSine, (PeriodicWave::createSine(sampleRate)));
@@ skipping 217 matching lines @@
 }
 
 bool OscillatorNode::propagatesSilence() const
 {
     return !isPlayingOrScheduled() || hasFinished() || !m_periodicWave.get();
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)