Migrated several tests from blink to V8 repository.

test/webkit/dfg-tear-off-arguments-not-activation.js

Index: test/webkit/dfg-tear-off-arguments-not-activation.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-tear-off-arguments-not-activation.js
similarity index 77%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-tear-off-arguments-not-activation.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..d3967ccfd0da6586c7050d67098e508d876c5c35 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-tear-off-arguments-not-activation.js
@@ -22,10 +22,24 @@
 // 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 the case that a function that might create an activation has not actually created one, but has created its arguments."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function bar() {
+    return foo.arguments;
+}
 
+function foo(p) {
+    var x = 42;
+    if (p)
+        return (function() { return x; });
+    else
+        return bar();
+}
+
+for (var i = 0; i < 200; ++i) {
+    var thingy = foo(false);
+    shouldBe("thingy.length", "1");
+    shouldBe("thingy[0]", "false");
+}