Define default values for options dictionaries for WebAudio

third_party/WebKit/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 48 matching lines @@
                                        ExceptionState& exception_state) {
   WaveShaperNode* node = Create(*context, exception_state);
 
   if (!node)
     return nullptr;
 
   node->HandleChannelOptions(options, exception_state);
 
   if (options.hasCurve())
     node->setCurve(options.curve(), exception_state);
-  if (options.hasOversample())
-    node->setOversample(options.oversample());
+
+  node->setOversample(options.oversample());
 
   return node;
 }
 WaveShaperProcessor* WaveShaperNode::GetWaveShaperProcessor() const {
   return static_cast<WaveShaperProcessor*>(
       static_cast<AudioBasicProcessorHandler&>(Handler()).Processor());
 }
 
 void WaveShaperNode::SetCurveImpl(const float* curve_data,
                                   unsigned curve_length,
@@ skipping 71 matching lines @@
       return "2x";
     case WaveShaperProcessor::kOverSample4x:
       return "4x";
     default:
       ASSERT_NOT_REACHED();
       return "none";
   }
 }
 
 }  // namespace blink