Migrated several tests from blink to V8 repository.

test/webkit/function-dot-length-read-only.js

Index: test/webkit/function-dot-length-read-only.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/function-dot-length-read-only.js
similarity index 85%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/function-dot-length-read-only.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..679d8b92115d198aed36c9884db8c30fcee5741e 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/function-dot-length-read-only.js
@@ -22,10 +22,15 @@
 // 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 function.length correctly intercepts stores when a function is used as a prototype."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo() { }
 
+function Bar() { }
+Bar.prototype = foo;
 
+var o = new Bar();
+shouldBe("o.length", "0");
+o.length = 42;
+shouldBe("o.length", "0");