arc: Support more orientation lock types.

arc: Support more orientation lock types.

Four orientation lock types are added for specific rotation
angles (0, 90, 180, 270 degrees).

Also, Orientation::CURRENT is improved to really lock to the
current orientation, not allowing upside-down orientation.

BUG=chromium:643102
TEST=Manually tested with a small Android app which calls
     Activity.setRequestedOrientation().

Review-Url: https://codereview.chromium.org/2300943002
Cr-Commit-Position: refs/heads/master@{#416164}
(cherry picked from commit d01b59e76b012baac3a45caf0adf744950cc2ce7)

Committed: https://chromium.googlesource.com/chromium/src/+/f0a9bc9d362b2bc061d88ebab35ccd4d1a4e9719

[Shuhei Takahashi, 2016-09-06 17:12:09]

Description was changed from

==========
arc: Support more orientation lock types.

Four orientation lock types are added for specific rotation
angles (0, 90, 180, 270 degrees).

Also, Orientation::CURRENT is improved to really lock to the
current orientation, not allowing upside-down orientation.

BUG=chromium:643102
TEST=Manually tested with a small Android app which calls
     Activity.setRequestedOrientation().

Review-Url: https://codereview.chromium.org/2300943002
Cr-Commit-Position: refs/heads/master@{#416164}
(cherry picked from commit d01b59e76b012baac3a45caf0adf744950cc2ce7)
==========

to

==========
arc: Support more orientation lock types.

Four orientation lock types are added for specific rotation
angles (0, 90, 180, 270 degrees).

Also, Orientation::CURRENT is improved to really lock to the
current orientation, not allowing upside-down orientation.

BUG=chromium:643102
TEST=Manually tested with a small Android app which calls
     Activity.setRequestedOrientation().

Review-Url: https://codereview.chromium.org/2300943002
Cr-Commit-Position: refs/heads/master@{#416164}
(cherry picked from commit d01b59e76b012baac3a45caf0adf744950cc2ce7)

Committed:
https://chromium.googlesource.com/chromium/src/+/f0a9bc9d362b2bc061d88ebab35c...
==========

[Shuhei Takahashi, 2016-09-06 17:12:11]

Committed patchset #1 (id:1) manually as
f0a9bc9d362b2bc061d88ebab35ccd4d1a4e9719 (tree was closed).