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

Source/modules/webaudio/ConvolverNode.h

Index: Source/modules/webaudio/ConvolverNode.h
diff --git a/Source/modules/webaudio/ConvolverNode.h b/Source/modules/webaudio/ConvolverNode.h
index b1c123bfb0bd2602a867e47b762741cfb43500b7..6431853b037c4e17d955752f76368ff50da339c6 100644
--- a/Source/modules/webaudio/ConvolverNode.h
+++ b/Source/modules/webaudio/ConvolverNode.h
@@ -34,16 +34,16 @@ namespace WebCore {
 
 class AudioBuffer;
 class Reverb;
-    
+
 class ConvolverNode : public AudioNode {
 public:
     static PassRefPtr<ConvolverNode> create(AudioContext* context, float sampleRate)
     {
-        return adoptRef(new ConvolverNode(context, sampleRate));      
+        return adoptRef(new ConvolverNode(context, sampleRate));
     }
-    
+
     virtual ~ConvolverNode();
-    
+
     // AudioNode
     virtual void process(size_t framesToProcess);
     virtual void reset();