Fix trailing whitespace in .cpp, .h, and .idl files

Source/core/platform/PlatformSpeechSynthesisVoice.cpp

Index: Source/core/platform/PlatformSpeechSynthesisVoice.cpp
diff --git a/Source/core/platform/PlatformSpeechSynthesisVoice.cpp b/Source/core/platform/PlatformSpeechSynthesisVoice.cpp
index 432de7bc5e181fc6879518273e6520b53a24db2b..39941d156fcd6c3db1010f4dbc5ecef0ae26ae46 100644
--- a/Source/core/platform/PlatformSpeechSynthesisVoice.cpp
+++ b/Source/core/platform/PlatformSpeechSynthesisVoice.cpp
@@ -37,7 +37,7 @@ PassRefPtr<PlatformSpeechSynthesisVoice> PlatformSpeechSynthesisVoice::create()
 {
     return adoptRef(new PlatformSpeechSynthesisVoice());
 }
-    
+
 PlatformSpeechSynthesisVoice::PlatformSpeechSynthesisVoice(const String& voiceURI, const String& name, const String& lang, bool localService, bool isDefault)
     : m_voiceURI(voiceURI)
     , m_name(name)