Extend Physical Web iOS auto-enable behavior beyond first launch.

Extend Physical Web iOS auto-enable behavior beyond first launch.

On Chrome start, we check whether the device state permits us to
auto-enable the Physical Web feature to perform foreground scanning for
nearby Bluetooth LE devices broadcasting URLs.

Previously, if the auto-enable conditions were not met, the Physical Web
preference would be set to the explicitly-disabled state. With this change,
the preference is left in an onboarding state and Chrome will check again
the next time Chrome is started.

BUG=695184
Review-Url: https://codereview.chromium.org/2704343005
Cr-Commit-Position: refs/heads/master@{#452571}
(cherry picked from commit 0e3b410bacaa28cde0c2be4c2eba96451c6ca72a)

Review-Url: https://codereview.chromium.org/2725803007 .
Cr-Commit-Position: refs/branch-heads/2987@{#742}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/b5bdcfde2530d5802d896df554536acdffe9ac3c

[mmocny, 2017-03-02 20:40:59]

Description was changed from

==========
Extend Physical Web iOS auto-enable behavior beyond first launch.

On Chrome start, we check whether the device state permits us to
auto-enable the Physical Web feature to perform foreground scanning for
nearby Bluetooth LE devices broadcasting URLs.

Previously, if the auto-enable conditions were not met, the Physical Web
preference would be set to the explicitly-disabled state. With this change,
the preference is left in an onboarding state and Chrome will check again
the next time Chrome is started.

BUG=695184

Review-Url: https://codereview.chromium.org/2704343005
Cr-Commit-Position: refs/heads/master@{#452571}
(cherry picked from commit 0e3b410bacaa28cde0c2be4c2eba96451c6ca72a)
==========

to

==========
Extend Physical Web iOS auto-enable behavior beyond first launch.

On Chrome start, we check whether the device state permits us to
auto-enable the Physical Web feature to perform foreground scanning for
nearby Bluetooth LE devices broadcasting URLs.

Previously, if the auto-enable conditions were not met, the Physical Web
preference would be set to the explicitly-disabled state. With this change,
the preference is left in an onboarding state and Chrome will check again
the next time Chrome is started.

BUG=695184

Review-Url: https://codereview.chromium.org/2704343005
Cr-Commit-Position: refs/heads/master@{#452571}
(cherry picked from commit 0e3b410bacaa28cde0c2be4c2eba96451c6ca72a)

Review-Url: https://codereview.chromium.org/2725803007 .
Cr-Commit-Position: refs/branch-heads/2987@{#742}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/b5bdcfde2530d5802d896df55453...
==========

[mmocny, 2017-03-02 20:41:01]

Committed patchset #1 (id:1) manually as
b5bdcfde2530d5802d896df554536acdffe9ac3c.