Migrated several tests from blink to V8 repository.

test/webkit/this-non-object-proto.js

Index: test/webkit/this-non-object-proto.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/this-non-object-proto.js
similarity index 80%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/this-non-object-proto.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..115b203fa4d2582bad5d5dc6a790a0847012343b 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/this-non-object-proto.js
@@ -22,10 +22,13 @@
 // 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."
+'This test checks that setting a non-object, non-null value for this.__proto__ does not lead to a crash when setting a property on the this object.'
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+originalProto = this.__proto__;
+this.__proto__ = 1;
 
+shouldBe("this.__proto__", "originalProto");
 
+someProperty = 1;
+debug('If we got to this point then we did not crash and the test has passed.');