Upgrade V8 to version 4.9.385.28

https://chromium.googlesource.com/v8/v8/+/4.9.385.28

FPIIM-449

Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/test/mjsunit/regress/regress-1419.js b/test/mjsunit/regress/regress-1419.js
index 98a8b76..55bcd7c 100644
--- a/test/mjsunit/regress/regress-1419.js
+++ b/test/mjsunit/regress/regress-1419.js
@@ -44,4 +44,12 @@
 var desc = Object.getOwnPropertyDescriptor(f1, 'length');
 assertEquals(false, desc.writable);
 assertEquals(false, desc.enumerable);
-assertEquals(false, desc.configurable);
+assertEquals(true, desc.configurable);
+
+Object.defineProperty(f1, 'length', {
+  value: 'abc',
+  writable: true
+});
+assertEquals('abc', f1.length);
+f1.length = 42;
+assertEquals(42, f1.length);