82777ba0c0
After applying collapsing toolbar in the Settings app, the toolbar title will be shown in every subsetting pages. However some pages in the security category don't need the title, like set screen lock page and lock screen page. This CL is to disable these titles through overriding isToolbarEnabled method. Bug: 176883575 Test: manual test and visual verified 1) Navigate to Settings -> Security -> Screen lock -> Pattern/PIN/Password 2) Observe and check if there is a duplicated title. Change-Id: I6dfa4fbe1b5e2ac3582804ba1e125196f3bdba6c