[AF] Fix the ios test fail

Wait for the OnPersonalDataFinishedProfileTasks, rather than
OnPersonalDataChanged. Rename the class accordingly.

Bug: 919967
Change-Id: I6e1808f67c384d99cb4f88d33f6d5ffb7d83d972
Reviewed-on: https://chromium-review.googlesource.com/c/1427792
Commit-Queue: Parastoo Geranmayeh <parastoog@google.com>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625372}
9 files changed