Make sure files end with exactly one new line and police this in presubmit.

test/webkit/fast/js/kde/Error.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 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
@@ skipping 14 matching lines @@
 // Error constructor called as a function
 shouldBe("Error('msg').message", "'msg'");
 
 // Error Constructor called as part of a new expression
 shouldBe("(new Error('msg')).message", "'msg'");
 // moved to evil-n.js shouldBeUndefined("(new Error()).message");
 shouldBe("(new Error('msg')).name", "'Error'");
 
 shouldBe("Object.prototype.toString.apply(Error())", "'[object Error]'");
 shouldBe("Object.prototype.toString.apply(Error)", "'[object Function]'");
-shouldBe("Object.prototype.toString.apply(EvalError)", "'[object Function]'");
+shouldBe("Object.prototype.toString.apply(EvalError)", "'[object Function]'");