Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/modules/webaudio/BiquadFilterNode.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 72 matching lines @@
     else if (type == "allpass")
         setType(BiquadProcessor::Allpass);
     else
         ASSERT_NOT_REACHED();
 }
 
 bool BiquadFilterNode::setType(unsigned type)
 {
     if (type > BiquadProcessor::Allpass)
         return false;
-    
+
     biquadProcessor()->setType(static_cast<BiquadProcessor::FilterType>(type));
     return true;
 }
 
 void BiquadFilterNode::getFrequencyResponse(const Float32Array* frequencyHz,
                                             Float32Array* magResponse,
                                             Float32Array* phaseResponse)
 {
     if (!frequencyHz || !magResponse || !phaseResponse)
         return;
-    
+
     int n = std::min(frequencyHz->length(),
                      std::min(magResponse->length(), phaseResponse->length()));
 
     if (n) {
         biquadProcessor()->getFrequencyResponse(n,
                                                 frequencyHz->data(),
                                                 magResponse->data(),
                                                 phaseResponse->data());
     }
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)