Fix params.h compilation. Because our ASSERT macro always references the conditional expression, not defining TypeInfo was causing a compile error on builders which had release asserts disabled. BUG=angleproject:747 BUG=chromium:716323 Change-Id: I3b5f27e39235f26b8bef5921c2d398320eb0ebaf Reviewed-on: https://chromium-review.googlesource.com/490426 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>