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

Source/modules/webaudio/BiquadFilterNode.h

Index: Source/modules/webaudio/BiquadFilterNode.h
diff --git a/Source/modules/webaudio/BiquadFilterNode.h b/Source/modules/webaudio/BiquadFilterNode.h
index 0777c3a1658a350a9e048f49967244acd5347e34..0ba4681c304f0473d449de733963e7edf93c53a7 100644
--- a/Source/modules/webaudio/BiquadFilterNode.h
+++ b/Source/modules/webaudio/BiquadFilterNode.h
@@ -31,7 +31,7 @@
 namespace WebCore {
 
 class AudioParam;
-    
+
 class BiquadFilterNode : public AudioBasicProcessorNode {
 public:
     // These must be defined as in the .idl file and must match those in the BiquadProcessor class.
@@ -48,7 +48,7 @@ public:
 
     static PassRefPtr<BiquadFilterNode> create(AudioContext* context, float sampleRate)
     {
-        return adoptRef(new BiquadFilterNode(context, sampleRate));      
+        return adoptRef(new BiquadFilterNode(context, sampleRate));
     }
 
     String type() const;