Fix trailing whitespace in .cpp, .h, and .idl files

Source/core/dom/NamedNodesCollection.h

Index: Source/core/dom/NamedNodesCollection.h
diff --git a/Source/core/dom/NamedNodesCollection.h b/Source/core/dom/NamedNodesCollection.h
index 54839b567d3b9448616d8d65d0fa18ce70255823..0b4199b143fbecf5b2a19466aff65942c01e5ae7 100644
--- a/Source/core/dom/NamedNodesCollection.h
+++ b/Source/core/dom/NamedNodesCollection.h
@@ -1,10 +1,10 @@
 /*
 * Copyright (C) 2009 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:
-* 
+*
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
@@ -14,7 +14,7 @@
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
-* 
+*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR