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

public/web/WebAudioSourceProvider.h

 /*
  * 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 10 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebAudioSourceProvider_h
 #define WebAudioSourceProvider_h
 
 #include "../platform/WebVector.h"
 
 namespace WebKit {
-    
+
 class WebAudioSourceProviderClient;
 
 // Abstract interface for a pull-model client.
 class WebAudioSourceProvider {
 public:
     // provideInput() gets called repeatedly to render time-slices of a continuous audio stream.
     virtual void provideInput(const WebVector<float*>& audioData, size_t numberOfFrames) = 0;
 
     // If a client is set, we call it back when the audio format is available.
     virtual void setClient(WebAudioSourceProviderClient*) { };
 
 protected:
     virtual ~WebAudioSourceProvider() { }
 };
 
 } // WebKit
 
 #endif // WebAudioSourceProvider_h