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

Source/wtf/text/StringHash.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2012, 2013 Apple Inc. All rights reserved
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 73 matching lines @@
 
         static unsigned hash(const LChar* data, unsigned length)
         {
             return StringHasher::computeHashAndMaskTop8Bits<LChar, foldCase<LChar> >(data, length);
         }
 
         static inline unsigned hash(const char* data, unsigned length)
         {
             return CaseFoldingHash::hash(reinterpret_cast<const LChar*>(data), length);
         }
-        
+
         static inline bool equal(const StringImpl* a, const StringImpl* b)
         {
             return equalIgnoringCaseNonNull(a, b);
         }
 
-        static unsigned hash(const RefPtr<StringImpl>& key) 
+        static unsigned hash(const RefPtr<StringImpl>& key)
         {
             return hash(key.get());
         }
 
         static bool equal(const RefPtr<StringImpl>& a, const RefPtr<StringImpl>& b)
         {
             return equal(a.get(), b.get());
         }
 
         static unsigned hash(const String& key)
@@ skipping 36 matching lines @@
         }
     };
 
 }
 
 using WTF::AlreadyHashed;
 using WTF::CaseFoldingHash;
 using WTF::StringHash;
 
 #endif