Add rotation to configuration.

Certain activities are dependent on the rotation of the device to
determine layout. In these cases, orientation does not provide enough
details.

This CL adds the field (hidden) to the configuration.

Change-Id: Idb3ba10cb4de8838737c25e92264e6cee224e264
Fixes: 32839232
Test: go/wm-smoke
4 files changed