Migrated several tests from blink to V8 repository.

test/webkit/dfg-arguments-alias-one-block.js

Index: test/webkit/dfg-arguments-alias-one-block.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-arguments-alias-one-block.js
similarity index 84%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-arguments-alias-one-block.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..46ed4444387e2867112ff714f618b2c7b8456cbe 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-arguments-alias-one-block.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."
+"Tests that if you alias the arguments in a very small function, arguments simplification still works."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
-
+function foo() {
+    var args = arguments;
+    return args[0] + args[1];
+}
 
+for (var i = 0; i < 200; ++i)
+    shouldBe("foo(i, i + 1)", "" + (i + i + 1));