Do not do field type tracking with GC stress.

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/718393004

Cr-Commit-Position: refs/heads/master@{#25355}

test/mjsunit/mjsunit.status

@@ -213,6 +213,7 @@
   'elements-kind': [SKIP],
   'elements-transition-hoisting': [SKIP],
   'fast-prototype': [SKIP],
+  'field-type-tracking': [SKIP],
   'getters-on-elements': [SKIP],
   'harmony/block-let-crankshaft': [SKIP],
   'opt-elements-kind': [SKIP],