Update to V8 with partial snapshots. This is taken from the partial_snapshot branch of V8.
diff --git a/test/mjsunit/debug-script.js b/test/mjsunit/debug-script.js
index effa145..402f90c 100644
--- a/test/mjsunit/debug-script.js
+++ b/test/mjsunit/debug-script.js
@@ -52,7 +52,7 @@
}
// This has to be updated if the number of native scripts change.
-assertEquals(12, named_native_count);
+assertEquals(13, named_native_count);
// If no snapshot is used, only the 'gc' extension is loaded.
// If snapshot is used, all extensions are cached in the snapshot.
assertTrue(extension_count == 1 || extension_count == 5);