Migrated several tests from blink to V8 repository.

test/webkit/dfg-array-pop-value-clearing.js

Index: test/webkit/dfg-array-pop-value-clearing.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-array-pop-value-clearing.js
similarity index 85%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-array-pop-value-clearing.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..6ea310a8ba8ef4e1f0423c9f9c10b16aca307a28 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-array-pop-value-clearing.js
@@ -22,10 +22,14 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"Tests that array popping properly cleans up the popped element."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
-
+function foo(a) {
+    var x = a.pop();
+    a[a.length + 1] = 42;
+    return [x, a.pop(), a.pop()];
+}
 
+for (var i = 0; i < 1000; ++i)
+    shouldBe("foo([1, 2])", "[2,42,,]");