Migrate more tests from blink repository.

test/webkit/fast/regex/quantified-assertions-expected.txt

 # Copyright 2013 the V8 project authors. All rights reserved.
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-This tests for a problem with put after delete that existed at one point in the past.
+This page tests assertions followed by quantifiers.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS props(a) is 'a,b,c,d,e'
-delete a.c
-PASS props(a) is 'a,b,d,e'
-define getter named c
-PASS props(a) is 'a,b,d,e,c'
 
+Testing regexp: /(?=a){0}/gm
+PASS regexp.test('a') is true
+PASS regexp.lastIndex is 0
+
+Testing regexp: /(?=a){1}/gm
+PASS regexp.test('a') is true
+PASS regexp.lastIndex is 0
+
+Testing regexp: /(?!a){0}/gm
+PASS regexp.test('b') is true
+PASS regexp.lastIndex is 0
+
+Testing regexp: /(?!a){1}/gm
+PASS regexp.test('b') is true
+PASS regexp.lastIndex is 0
+PASS /^(?=a)?b$/.test("b") is true
 PASS successfullyParsed is true
 
 TEST COMPLETE