[ios] Add pure obj-c address for manual fallback

Bug: 845472
Change-Id: Icb239377ea417d68c46d4a8bf4bc38ddf11b1b42
Reviewed-on: https://chromium-review.googlesource.com/c/1333810
Commit-Queue: David Jean <djean@chromium.org>
Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607953}
7 files changed