Promote ArrayBuffer, DataView and typed arrays to non-experimental.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index df799bdd63aff01336e6e05d0b174b0424e69ae4..649e0f69a27b3adabb8e250ed5963b299fb429b8 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -3068,12 +3068,6 @@ TEST(Regress169209) {
   i::FLAG_allow_natives_syntax = true;
   i::FLAG_flush_code_incrementally = true;
 
-  // Experimental natives are compiled during snapshot deserialization.
-  // This test breaks because heap layout changes in a way that closure
-  // is visited before shared function info.
-  i::FLAG_harmony_typed_arrays = false;
-  i::FLAG_harmony_array_buffer = false;
-
   // Disable loading the i18n extension which breaks the assumptions of this
   // test about the heap layout.
   i::FLAG_enable_i18n = false;