Migrate more tests from blink repository.

test/webkit/fast/regex/early-acid3-86.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
 //     documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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
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 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"This test checks that toString() does not have a problem when an object has itself as a property."
+'Test that covers capturing brackets, and was adapted from a part of an early version of Acid3.'
 );
 
-// Array (elements)
-shouldBe("var array = []; array[0] = array; array + ''", "''");
-
-// Error (name, message)
-shouldBe("var error = new Error; error.name = error; error.message = error; error + ''", "''");
-
-// RegExp (source)
-shouldBe("var regexp = /a/; regexp.source = regexp; regexp + ''", "'/a/'");
+// JS regexps aren't like Perl regexps, if their character
+// classes start with a ] that means they're empty. So this
+// is a syntax error; if we get here it's a bug.
+shouldThrow("/TA[])]/.exec('TA]')");
+shouldBe("/[]/.exec('')", "null");
+shouldBe("/(\\3)(\\1)(a)/.exec('cat').toString()", "'a,,,a'");