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

Source/modules/speech/DOMWindowSpeechSynthesis.h

Index: Source/modules/speech/DOMWindowSpeechSynthesis.h
diff --git a/Source/modules/speech/DOMWindowSpeechSynthesis.h b/Source/modules/speech/DOMWindowSpeechSynthesis.h
index d4a95ac4b061f8e597cae558fc998b774a519249..4f2b0752b5fa0730921dd1b0697e08e594acc532 100644
--- a/Source/modules/speech/DOMWindowSpeechSynthesis.h
+++ b/Source/modules/speech/DOMWindowSpeechSynthesis.h
@@ -31,22 +31,22 @@
 #include "modules/speech/SpeechSynthesis.h"
 
 namespace WebCore {
-    
+
 class DOMWindow;
 
 class DOMWindowSpeechSynthesis : public Supplement<DOMWindow>, public DOMWindowProperty {
 public:
     virtual ~DOMWindowSpeechSynthesis();
-    
+
     static SpeechSynthesis* speechSynthesis(DOMWindow*);
     static DOMWindowSpeechSynthesis* from(DOMWindow*);
-    
+
 private:
     explicit DOMWindowSpeechSynthesis(DOMWindow*);
-    
+
     SpeechSynthesis* speechSynthesis();
     static const char* supplementName();
-    
+
     RefPtr<SpeechSynthesis> m_speechSynthesis;
 };