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

Source/wtf/text/StringConcatenate.h

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef StringConcatenate_h
 #define StringConcatenate_h
 
 #include <string.h>
 
 #ifndef WTFString_h
 #include "wtf/text/AtomicString.h"
 #endif
@@ skipping 330 matching lines @@
     bool is8Bit() { return m_buffer.isNull() || m_buffer.is8Bit(); }
 
     void writeTo(LChar* destination)
     {
         unsigned length = m_buffer.length();
 
         ASSERT(is8Bit());
         const LChar* data = m_buffer.characters8();
         for (unsigned i = 0; i < length; ++i)
             destination[i] = data[i];
-        
+
         WTF_STRINGTYPEADAPTER_COPIED_WTF_STRING();
     }
 
     void writeTo(UChar* destination)
     {
         unsigned length = m_buffer.length();
 
         if (is8Bit()) {
             const LChar* data = m_buffer.characters8();
             for (unsigned i = 0; i < length; ++i)
                 destination[i] = data[i];
         } else {
             const UChar* data = m_buffer.characters16();
             for (unsigned i = 0; i < length; ++i)
                 destination[i] = data[i];
         }
-        
+
         WTF_STRINGTYPEADAPTER_COPIED_WTF_STRING();
     }
 
 private:
     const String& m_buffer;
 };
 
 template<>
 class StringTypeAdapter<AtomicString> {
 public:
@@ skipping 57 matching lines @@
     result += adapter1.length();
     adapter2.writeTo(result);
 
     return resultImpl.release();
 }
 
 } // namespace WTF
 
 #include "wtf/text/StringOperators.h"
 #endif