Merge "Add the feature tags for the pager mode, larege message mode, deffered messaging and large-pager mode." am: fe011e06b5 am: 6436a28291

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2392836

Change-Id: Ib302b13d0405154c9a5ee6aa86e63c8426536dfa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>