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This CL replicates on Android the following changes already done on
other platforms:
 - Replace the Autofill toggle with two new toggles, one for credit
   cards and one for addresses, and add them to the corresponding
   pages in Settings;
 - Update the strings for titles, toggles, and toggle descriptions;
 - Delete deprecated strings.

This takes up crrev.com/c/1135514, which was abandoned. Comments
initially added there have also been addressed here.

A follow-up CL will get rid of the "Autofill and payments" page
and move the "Addresses" and "Payments" page to the top Settings
page.

Screenshots and video (Googlers only): https://drive.google.com/open?id=1ZZr2lbX9q48DAxiTSVq6dZCImchqz-yA

Bug: 860526
Change-Id: I613f3badfb655532228ee1b6b6029eac06f1d42f
Reviewed-on: https://chromium-review.googlesource.com/1194474
Commit-Queue: Fabio Tirelo <ftirelo@chromium.org>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587770}