[iOS] Moving instance variables to properties

Moving instance variables to properties to follow objective-c style.
This change also fixes a potential crasher since objective-c blocks
need to be copied to be stored.

Bug: 1151288
Change-Id: I9c2021e0905483e17a56c7b0e9daef2e227d95b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2845304
Reviewed-by: Nohemi Fernandez <fernandex@chromium.org>
Reviewed-by: Jérôme Lebel <jlebel@chromium.org>
Commit-Queue: Nohemi Fernandez <fernandex@chromium.org>
Auto-Submit: Jérôme Lebel <jlebel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#875196}
GitOrigin-RevId: 0cbe69b73836e954d84caad185e90ce7ff6b53a4
1 file changed