Define default values for options dictionaries for WebAudio

third_party/WebKit/Source/modules/webaudio/PeriodicWave.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
@@ skipping 78 matching lines @@
                                    ExceptionState& exception_state) {
   DCHECK(IsMainThread());
 
   return Create(context, real->length(), real->Data(), imag->length(),
                 imag->Data(), disable_normalization, exception_state);
 }
 
 PeriodicWave* PeriodicWave::Create(BaseAudioContext* context,
                                    const PeriodicWaveOptions& options,
                                    ExceptionState& exception_state) {
-  bool normalize = options.hasDisableNormalization()
-                       ? options.disableNormalization()
-                       : false;
+  bool normalize = options.disableNormalization();
 
   Vector<float> real_coef;
   Vector<float> imag_coef;
 
   if (options.hasReal()) {
     real_coef = options.real();
     if (options.hasImag())
       imag_coef = options.imag();
     else
       imag_coef.Resize(real_coef.size());
@@ skipping 285 matching lines @@
     }
 
     real_p[n] = 0;
     imag_p[n] = b;
   }
 
   CreateBandLimitedTables(real_p, imag_p, half_size, false);
 }
 
 }  // namespace blink