tree 01d506e6281e291c41e12fd0e64ba33b59dbb9a5
parent 93288717821630129d40f66d2b1c0c85096983f9
author YoungSeok Yoon <youngseokyoon@google.com> 1446136188 -0700
committer YoungSeok Yoon <youngseokyoon@google.com> 1446137033 -0700

reader/android: show active device sets instead of pdf files

This CL changes the PdfChooserActivity to DeviceSetChooserActivity,
which means that the first screen the user sees shows the list of
currently active device sets.

A device set always has a file attached to it, and when the user
clicks on a device set, the app shows the content of the corresponding
PDF file.

Change-Id: I6e840ac267482aee52b0bc2f2997edfef1eefeb5