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

Source/modules/webaudio/OfflineAudioDestinationNode.h

Index: Source/modules/webaudio/OfflineAudioDestinationNode.h
diff --git a/Source/modules/webaudio/OfflineAudioDestinationNode.h b/Source/modules/webaudio/OfflineAudioDestinationNode.h
index 5cfa2a8ddbddf8466dc32ef56b17ea034f769341..d69c9ce4781a9a556dad72ba956294bca86d70fc 100644
--- a/Source/modules/webaudio/OfflineAudioDestinationNode.h
+++ b/Source/modules/webaudio/OfflineAudioDestinationNode.h
@@ -35,17 +35,17 @@ namespace WebCore {
 
 class AudioBus;
 class AudioContext;
-    
+
 class OfflineAudioDestinationNode : public AudioDestinationNode {
 public:
     static PassRefPtr<OfflineAudioDestinationNode> create(AudioContext* context, AudioBuffer* renderTarget)
     {
-        return adoptRef(new OfflineAudioDestinationNode(context, renderTarget));     
+        return adoptRef(new OfflineAudioDestinationNode(context, renderTarget));
     }
 
     virtual ~OfflineAudioDestinationNode();
-    
-    // AudioNode   
+
+    // AudioNode
     virtual void initialize() OVERRIDE;
     virtual void uninitialize() OVERRIDE;
 
@@ -60,16 +60,16 @@ private:
 
     // This AudioNode renders into this AudioBuffer.
     RefPtr<AudioBuffer> m_renderTarget;
-    
+
     // Temporary AudioBus for each render quantum.
     RefPtr<AudioBus> m_renderBus;
-    
+
     // Rendering thread.
     volatile ThreadIdentifier m_renderThread;
     bool m_startedRendering;
     static void offlineRenderEntry(void* threadData);
     void offlineRender();
-    
+
     // For completion callback on main thread.
     static void notifyCompleteDispatch(void* userData);
     void notifyComplete();