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

Source/core/dom/NamedNodeMap.idl

Index: Source/core/dom/NamedNodeMap.idl
diff --git a/Source/core/dom/NamedNodeMap.idl b/Source/core/dom/NamedNodeMap.idl
index d0bd9bdb86b220bfc131e8e971cf16152795740b..698a0353fa096de7633b19ff3aca0987eb79a1fb 100644
--- a/Source/core/dom/NamedNodeMap.idl
+++ b/Source/core/dom/NamedNodeMap.idl
@@ -30,14 +30,14 @@
     [RaisesException, DeliverCustomElementCallbacks] Node removeNamedItem([Default=Undefined] optional DOMString name);
 
     getter Node item([Default=Undefined] optional unsigned long index);
-    
+
     readonly attribute unsigned long length;
 
 
     // Introduced in DOM Level 2:
 
     // FIXME: the implementation does take an exceptioncode parameter.
-    /*[RaisesException]*/ Node getNamedItemNS([TreatNullAs=NullString,Default=Undefined] optional DOMString namespaceURI, 
+    /*[RaisesException]*/ Node getNamedItemNS([TreatNullAs=NullString,Default=Undefined] optional DOMString namespaceURI,
                                               [Default=Undefined] optional DOMString localName);
 
     [RaisesException, DeliverCustomElementCallbacks] Node setNamedItemNS([Default=Undefined] optional Node node);