Expand code that syncs ToS-seen prefs on Android.

Expand code that syncs ToS-seen prefs on Android.

With this change, this code will set both the Java and native side
prefs if any of the three indicators of TOS being seen are true,
i.e. either of the two prefs or "any user has seen ToS".

This is especially needed to fix variations seed fetching from
native code in the case of Backup & Restore, which does not
appear to restore the Chrome native pref.

BUG=669543
Review-Url: https://codereview.chromium.org/2614183002
Cr-Commit-Position: refs/heads/master@{#442065}
(cherry picked from commit a82983afecb4762005ac0d57809c55382aa6d1dd)

Review-Url: https://codereview.chromium.org/2617363005 .
Cr-Commit-Position: refs/branch-heads/2924@{#706}
Cr-Branched-From: 3a87aecc31cd1ffe751dd72c04e5a96a1fc8108a-refs/heads/master@{#433059}
Committed: https://chromium.googlesource.com/chromium/src/+/b451bcfd3e7671196c7679118e02df98eb3dcf25

[Alexei Svitkine (slow), 2017-01-09 20:26:06]

Description was changed from

==========
Expand code that syncs ToS-seen prefs on Android.

With this change, this code will set both the Java and native side
prefs if any of the three indicators of TOS being seen are true,
i.e. either of the two prefs or "any user has seen ToS".

This is especially needed to fix variations seed fetching from
native code in the case of Backup & Restore, which does not
appear to restore the Chrome native pref.

BUG=669543

Review-Url: https://codereview.chromium.org/2614183002
Cr-Commit-Position: refs/heads/master@{#442065}
(cherry picked from commit a82983afecb4762005ac0d57809c55382aa6d1dd)
==========

to

==========
Expand code that syncs ToS-seen prefs on Android.

With this change, this code will set both the Java and native side
prefs if any of the three indicators of TOS being seen are true,
i.e. either of the two prefs or "any user has seen ToS".

This is especially needed to fix variations seed fetching from
native code in the case of Backup & Restore, which does not
appear to restore the Chrome native pref.

BUG=669543

Review-Url: https://codereview.chromium.org/2614183002
Cr-Commit-Position: refs/heads/master@{#442065}
(cherry picked from commit a82983afecb4762005ac0d57809c55382aa6d1dd)

Review-Url: https://codereview.chromium.org/2617363005 .
Cr-Commit-Position: refs/branch-heads/2924@{#706}
Cr-Branched-From:
3a87aecc31cd1ffe751dd72c04e5a96a1fc8108a-refs/heads/master@{#433059}
Committed:
https://chromium.googlesource.com/chromium/src/+/b451bcfd3e7671196c7679118e02...
==========

[Alexei Svitkine (slow), 2017-01-09 20:26:08]

Committed patchset #1 (id:1) manually as
b451bcfd3e7671196c7679118e02df98eb3dcf25.