tree b4af735856a4a41a9cc97e824aa62d3a9a02921b
parent 39f1a997836741bf95c0b3f301bb73b23fed8567
author YoungSeok Yoon <youngseokyoon@google.com> 1450835976 -0800
committer YoungSeok Yoon <youngseokyoon@google.com> 1452291794 -0800

reader/android: progress indicator for the device set creation phase.

Initial attempt to show a progress indicator when creating a new
device set. To enable this, the device set creation logic became
largely asynchronous, using ListenableFutures.

The progress indicator for the second phase (device set joining phase)
will be implemented later in a slightly different way.

Change-Id: I9846868ca41aa16e48e8df15d90c0311016093fb