Use OutputConfigurator::SetDislpayMode for ctrl-fullscreen
 DisplayManager knows the mirroring state, so no need to rely on
 OutputConfigurator to move to next state. There is a chance
 that dislpay may be disconnected when SetDisplayMode, but that's
 harmless as it simply returns false.

BUG=180443
TEST=manual. see bug.

Review URL: https://codereview.chromium.org/12496020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@189738 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed