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

Source/wtf/AutodrainedPool.h

 /*
  * Copyright (C) 2007, 2013 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. 
+ *     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. 
+ *     documentation and/or other materials provided with the distribution.
  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
  *     its contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission. 
+ *     from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
  */
 
 #ifndef AutodrainedPool_h
 #define AutodrainedPool_h
 
 #include "wtf/Noncopyable.h"
 #include "wtf/WTFExport.h"
 
 OBJC_CLASS NSAutoreleasePool;
 
 namespace WTF {
 
 class AutodrainedPool {
     WTF_MAKE_NONCOPYABLE(AutodrainedPool);
 public:
 #if OS(DARWIN)
     WTF_EXPORT explicit AutodrainedPool(int iterationLimit = 1);
     WTF_EXPORT ~AutodrainedPool();
-    
+
     WTF_EXPORT void cycle();
 #else
     AutodrainedPool() { }
     ~AutodrainedPool() { }
     void cycle() { }
 #endif
-    
+
 private:
 #if OS(DARWIN)
     int m_iterationLimit;
     int m_iterationCount;
     NSAutoreleasePool* m_pool;
 #endif
 };
 
 } // namespace WTF
 
 using WTF::AutodrainedPool;
 
 #endif