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

Source/modules/speech/SpeechSynthesisUtterance.cpp

Index: Source/modules/speech/SpeechSynthesisUtterance.cpp
diff --git a/Source/modules/speech/SpeechSynthesisUtterance.cpp b/Source/modules/speech/SpeechSynthesisUtterance.cpp
index c394a3c166e749c6234cfe82152e4ab12cefa47e..b11d046f80f093757720c3ebd32bbc8c003e3ca7 100644
--- a/Source/modules/speech/SpeechSynthesisUtterance.cpp
+++ b/Source/modules/speech/SpeechSynthesisUtterance.cpp
@@ -27,7 +27,7 @@
 #include "modules/speech/SpeechSynthesisUtterance.h"
 
 namespace WebCore {
-    
+
 PassRefPtr<SpeechSynthesisUtterance> SpeechSynthesisUtterance::create(ScriptExecutionContext* context, const String& text)
 {
     return adoptRef(new SpeechSynthesisUtterance(context, text));
@@ -45,12 +45,12 @@ SpeechSynthesisUtterance::~SpeechSynthesisUtterance()
 {
     m_platformUtterance->setClient(0);
 }
-    
+
 ScriptExecutionContext* SpeechSynthesisUtterance::scriptExecutionContext() const
 {
     return ContextLifecycleObserver::scriptExecutionContext();
-}    
-    
+}
+
 const AtomicString& SpeechSynthesisUtterance::interfaceName() const
 {
     return eventNames().interfaceForSpeechSynthesisUtterance;
@@ -66,7 +66,7 @@ void SpeechSynthesisUtterance::setVoice(SpeechSynthesisVoice* voice)
     // Cache our own version of the SpeechSynthesisVoice so that we don't have to do some lookup
     // to go from the platform voice back to the speech synthesis voice in the read property.
     m_voice = voice;
-    
+
     if (voice)
         m_platformUtterance->setVoice(voice->platformVoice());
 }