Migrated several tests from blink to V8 repository.

test/webkit/flatten-dictionary-structure-from-which-all-properties-were-deleted.js

Index: test/webkit/flatten-dictionary-structure-from-which-all-properties-were-deleted.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/flatten-dictionary-structure-from-which-all-properties-were-deleted.js
similarity index 80%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/flatten-dictionary-structure-from-which-all-properties-were-deleted.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..ccaccadd28cbbdb0c6575aa57a67cf3c0c4f1543 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/flatten-dictionary-structure-from-which-all-properties-were-deleted.js
@@ -22,10 +22,22 @@
 // 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 deleting all properties from an object and then flattening it doesn't cause inconsistencies."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+var o = {};
 
+for (var i = 0; i < 1000; ++i)
+    o["a" + i] = i;
 
+for (var i = 0; i < 1000; ++i)
+    delete o["a" + i];
+
+var p = {};
+p.__proto__ = o;
+
+var q = {f:42};
+o.__proto__ = q;
+
+for (var i = 0; i < 100; ++i)
+    shouldBe("p.f", "42");