Allow no-internal display mode
- Remember primary per display pair
- remember power state. Restore when restarted, but not boot time.
- DefaultLayout is used to construct layout for display pair.
It used to be used if the layout wasn't set before, but since layout has other data such as primary/mirror state, it makes more sense to copy it first.
Cleanup: remove unnecessary code.
BUG=218387
TEST=covered by test. manually tested on device.
Review URL: https://chromiumcodereview.appspot.com/12865019
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@191509 0039d316-1c4b-4281-b951-d872f2087c98
20 files changed
