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

Source/wtf/FilePrintStream.cpp

 /*
  * Copyright (C) 2012 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.
  */
 
 #include "config.h"
 #include "FilePrintStream.h"
 
 namespace WTF {
 
 FilePrintStream::FilePrintStream(FILE* file, AdoptionMode adoptionMode)
     : m_file(file)
     , m_adoptionMode(adoptionMode)
 {
 }
 
 FilePrintStream::~FilePrintStream()
 {
     if (m_adoptionMode == Borrow)
         return;
     fclose(m_file);
 }
 
 PassOwnPtr<FilePrintStream> FilePrintStream::open(const char* filename, const char* mode)
 {
     FILE* file = fopen(filename, mode);
     if (!file)
         return PassOwnPtr<FilePrintStream>();
-    
+
     return adoptPtr(new FilePrintStream(file));
 }
 
 void FilePrintStream::vprintf(const char* format, va_list argList)
 {
     vfprintf(m_file, format, argList);
 }
 
 void FilePrintStream::flush()
 {
     fflush(m_file);
 }
 
 } // namespace WTF