Improve existing lock transition - remove black splash.
During screen lock we move wallpaper from normal background
layer to screen lock background layer. That means that both
these layers should be excluded from the lock animations.
Lock background layer (with wallpaper, not black solid color layer)
is included in shutdown animation though.
BUG=144737
TEST=Manual: Lock/Shutdown from login screen/user session using power button / shortcut / UI controls.
Review URL: https://chromiumcodereview.appspot.com/10909008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@154936 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed
