Reland "Mash cleanup: remove kiosk related mojos, replace with interface"

This relands 4bace02d621249a5934b7220028134a2f9f9fbfb without includes
of stale header kiosk_app_info.mojom.h

TBR=derat@chromium.org,tsepez@chromium.org

Bug: 962631
Change-Id: I2c13a3453a12c6369431191dc53aed28b0595fcb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1610843
Reviewed-by: Evan Stade <estade@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659212}

• ash/login/login_screen_controller.cc[diff]
• ash/login/login_screen_controller.h[diff]
• ash/login/mock_login_screen_client.h[diff]
• ash/login/ui/lock_debug_view.cc[diff]
• ash/public/cpp/BUILD.gn[diff]
• ash/public/cpp/kiosk_app_menu.cc[Added - diff]
• ash/public/cpp/kiosk_app_menu.h[Added - diff]
• ash/public/interfaces/BUILD.gn[diff]
• ash/public/interfaces/kiosk_app_info.mojom[Deleted - diff]
• ash/public/interfaces/login_screen.mojom[diff]
• ash/shelf/login_shelf_view.cc[diff]
• ash/shelf/login_shelf_view.h[diff]
• ash/shelf/login_shelf_view_unittest.cc[diff]
• chrome/browser/chromeos/BUILD.gn[diff]
• chrome/browser/chromeos/login/ui/kiosk_app_menu_controller.cc[Added - diff]
• chrome/browser/chromeos/login/ui/kiosk_app_menu_controller.h[Renamed from chrome/browser/chromeos/login/ui/kiosk_app_menu_updater.h - diff]
• chrome/browser/chromeos/login/ui/kiosk_app_menu_updater.cc[Deleted - diff]
• chrome/browser/chromeos/login/ui/login_display_host_common.cc[diff]
• chrome/browser/chromeos/login/ui/login_display_host_common.h[diff]
• chrome/browser/chromeos/login/ui/login_display_host_webui.cc[diff]
• chrome/browser/chromeos/login/ui/login_display_host_webui.h[diff]
• chrome/browser/ui/ash/login_screen_client.cc[diff]
• chrome/browser/ui/ash/login_screen_client.h[diff]
• chrome/browser/ui/ash/test_login_screen.cc[diff]
• chrome/browser/ui/ash/test_login_screen.h[diff]