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/+/2e451fa899aa2cdee0243da30c60f89642f714d6

[Shuhei Takahashi, 2016-09-08 07:19:44]

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/+/2e451fa899aa2cdee0243da30c60...
==========

[Shuhei Takahashi, 2016-09-08 07:19:46]

Committed patchset #1 (id:1) manually as
2e451fa899aa2cdee0243da30c60f89642f714d6.