Camera2 : Make navigation bar and status bar transparent

Change-Id: Ia12a7fe3e23bf0666f32e655103bad8308e383fb
Automatic translation import

Change-Id: I4d73c8d6da920a7371043e5aa9b1f8cd5286f2b8
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_packages_apps_Camera2 into HEAD