am 4ccee29d: am 8e46bfe9: am b9fb0d74: Merge "Mms: Show menu option to delete all messages"

# By Suresh Koleti
# Via Android Git Automerger (2) and others
* commit '4ccee29d81eab3695da55ce44f5235e68a7a9eb1':
  Mms: Show menu option to delete all messages