Assert destination handler exists in AudioParam

third_party/WebKit/Source/modules/webaudio/AudioParam.h

 /*
  * 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
@@ skipping 110 matching lines @@
     // Calculates numberOfValues parameter values starting at the context's current time.
     // Must be called in the context's render thread.
     void calculateSampleAccurateValues(float* values, unsigned numberOfValues);
 
     // Connect an audio-rate signal to control this parameter.
     void connect(AudioNodeOutput&);
     void disconnect(AudioNodeOutput&);
 
     float intrinsicValue() const { return noBarrierLoad(&m_intrinsicValue); }
 private:
-    AudioParamHandler(AbstractAudioContext& context, AudioParamType paramType, double defaultValue)
-        : AudioSummingJunction(context.deferredTaskHandler())
-        , m_paramType(paramType)
-        , m_intrinsicValue(defaultValue)
-        , m_defaultValue(defaultValue)
-        , m_smoothedValue(defaultValue)
-        , m_destinationHandler(context.destination()->audioDestinationHandler())
-    { }
+    AudioParamHandler(AbstractAudioContext&, AudioParamType, double defaultValue);
 
     // sampleAccurate corresponds to a-rate (audio rate) vs. k-rate in the Web Audio specification.
     void calculateFinalValues(float* values, unsigned numberOfValues, bool sampleAccurate);
     void calculateTimelineValues(float* values, unsigned numberOfValues);
 
     // The type of AudioParam, indicating what this AudioParam represents and what node it belongs
     // to.  Mostly for informational purposes and doesn't affect implementation.
     AudioParamType m_paramType;
 
     // Intrinsic value
@@ skipping 38 matching lines @@
 private:
     AudioParam(AbstractAudioContext&, AudioParamType, double defaultValue);
 
     RefPtr<AudioParamHandler> m_handler;
     Member<AbstractAudioContext> m_context;
 };
 
 } // namespace blink
 
 #endif // AudioParam_h