Sets the rotation source as USER when using the system display API

Sets the rotation source as USER when using the system display API

The rotation preference is not persistent across reboot since we only
store the preference if the rotation source is 'USER'. With the move to
MD settings, we now use the System Display API to update any display
settings, which still uses the source of rotation as ACTIVE.

This change updates the source of rotation to USER. We persist the
setting even if the change has been made by an application. (This is
consistent with the other settings that are being set via this API.)

BUG=716110
COMPONENT=Display Info Provider, Chrome Settings

Review-Url: https://codereview.chromium.org/2920703003
Cr-Original-Commit-Position: refs/heads/master@{#476734}
Review-Url: https://codereview.chromium.org/2954343003 .
Cr-Commit-Position: refs/branch-heads/3112@{#474}
Cr-Branched-From: b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed: https://chromium.googlesource.com/chromium/src/+/c6d6bd1be3e6042c5022afdb40fc5334ed0bc7e0

[malaykeshav, 2017-06-27 01:26:30]

Description was changed from

==========
Sets the rotation source as USER when using the system display API

The rotation preference is not persistent across reboot since we only
store the preference if the rotation source is 'USER'. With the move to
MD settings, we now use the System Display API to update any display
settings, which still uses the source of rotation as ACTIVE.

This change updates the source of rotation to USER. We persist the
setting even if the change has been made by an application. (This is
consistent with the other settings that are being set via this API.)

BUG=716110
COMPONENT=Display Info Provider, Chrome Settings

Review-Url: https://codereview.chromium.org/2920703003
Cr-Commit-Position: refs/heads/master@{#476734}
(cherry picked from commit 100ef2b48dbab733c8cebe556a673f4f16d20c49)
==========

to

==========
Sets the rotation source as USER when using the system display API

The rotation preference is not persistent across reboot since we only
store the preference if the rotation source is 'USER'. With the move to
MD settings, we now use the System Display API to update any display
settings, which still uses the source of rotation as ACTIVE.

This change updates the source of rotation to USER. We persist the
setting even if the change has been made by an application. (This is
consistent with the other settings that are being set via this API.)

BUG=716110
COMPONENT=Display Info Provider, Chrome Settings

Review-Url: https://codereview.chromium.org/2920703003
Cr-Original-Commit-Position: refs/heads/master@{#476734}
Review-Url: https://codereview.chromium.org/2954343003 .
Cr-Commit-Position: refs/branch-heads/3112@{#474}
Cr-Branched-From:
b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed:
https://chromium.googlesource.com/chromium/src/+/c6d6bd1be3e6042c5022afdb40fc...
==========

[malaykeshav, 2017-06-27 01:26:31]

Committed patchset #1 (id:1) manually as
c6d6bd1be3e6042c5022afdb40fc5334ed0bc7e0 (tree was closed).