Migrated several tests from blink to V8 repository.

test/webkit/Array-isArray-expected.txt

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-Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating.
+Test to ensure correct behaviour of Array.array
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS [42].concat() is [42]
+PASS Array.isArray([]) is true
+PASS Array.isArray(new Array) is true
+PASS Array.isArray(Array()) is true
+PASS Array.isArray('abc'.match(/(a)*/g)) is true
+PASS (function(){ return Array.isArray(arguments); })() is false
+PASS Array.isArray() is false
+PASS Array.isArray(null) is false
+PASS Array.isArray(undefined) is false
+PASS Array.isArray(true) is false
+PASS Array.isArray(false) is false
+PASS Array.isArray('a string') is false
+PASS Array.isArray({}) is false
+PASS Array.isArray({length: 5}) is false
+PASS Array.isArray({__proto__: Array.prototype, length:1, 0:1, 1:2}) is false
 PASS successfullyParsed is true
 
 TEST COMPLETE