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

public/platform/WebGraphicsMemoryStats.h

 /*
  * Copyright (C) 2012 Google 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
@@ skipping 27 matching lines @@
     // being visible.
     size_t bytesVisibleAndNearby;
 
     // The number of bytes currently allocated.
     size_t bytesAllocated;
 
     // Whether or not a backbuffer is currently requested (the memory usage
     // of the buffer is known by the GPU process).
     bool backbufferRequested;
 
-    WebGraphicsManagedMemoryStats() 
+    WebGraphicsManagedMemoryStats()
         : bytesVisible(0)
         , bytesVisibleAndNearby(0)
         , bytesAllocated(0)
         , backbufferRequested(0)
     {
     }
 };
 
 } // namespace WebKit
 
 #endif