am 23004f0c: Add dynamic sharing menu and start activity by sharing type.

Merge commit '23004f0c6d3bab2ec4282687a3f58119f8cb7bc2' into gingerbread-plus-aosp

* commit '23004f0c6d3bab2ec4282687a3f58119f8cb7bc2':
  Add dynamic sharing menu and start activity by sharing type.