Slightly reduce memory usage in OscillatorNode

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

 /*
  * Copyright (C) 2010, 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 501 matching lines @@
     ExceptionState& exception_state) {
   DCHECK(IsMainThread());
 
   return ChannelMergerNode::Create(*this, number_of_inputs, exception_state);
 }
 
 OscillatorNode* BaseAudioContext::createOscillator(
     ExceptionState& exception_state) {
   DCHECK(IsMainThread());
 
-  return OscillatorNode::Create(*this, exception_state);
+  return OscillatorNode::Create(*this, "sine", nullptr, exception_state);
 }
 
 PeriodicWave* BaseAudioContext::createPeriodicWave(
     const Vector<float>& real,
     const Vector<float>& imag,
     ExceptionState& exception_state) {
   DCHECK(IsMainThread());
 
   return PeriodicWave::Create(*this, real, imag, false, exception_state);
 }
@@ skipping 386 matching lines @@
 }
 
 SecurityOrigin* BaseAudioContext::GetSecurityOrigin() const {
   if (GetExecutionContext())
     return GetExecutionContext()->GetSecurityOrigin();
 
   return nullptr;
 }
 
 }  // namespace blink