Migrated several tests from blink to V8 repository.

test/webkit/dfg-cse-dead-get-scoped-var.js

Index: test/webkit/dfg-cse-dead-get-scoped-var.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-cse-dead-get-scoped-var.js
similarity index 83%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-cse-dead-get-scoped-var.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..aec600b6f918441794da393dfd1bb472f0f4fb20 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-cse-dead-get-scoped-var.js
@@ -22,10 +22,20 @@
 // 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 CSE doesn't try to match against a dead GetScopedVar."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(a) {
+    var x = a;
+    return function(p) {
+        if (p) {
+            var tmp = x;
+            return x;
+        }
+        return 42;
+    };
+}
 
+for (var i = 0; i < 1000; ++i)
+    shouldBe("foo(i)(false)", "42");