the original filters. This affects preview, not download.
This does not preflight the launch at all, it is very simple
as it simply downloads the attachment and then tries to open it.
If no activity is found, it uses a toast to say "couldn't do
that." A better fix will be to pre-check the mime type to see
if there are any intent filters to handle it.
BUG=1650669
Automated import of CL 148257
The default values are 25 (default) and 25 (increment). This is fine
for Stores that control downloads by # of messages, but won't work for
stores that use other measurements - e.g. EAS windows the download in #
of days. So for this change:
1. Allow the StoreInfo to provide non-default values
2. Remove the hardcoded references to the default values
3. Use StoreInfo values everywhere
4. Set the values to 1,1 in EAS store info
BUG=1789913
Automated import of CL 146331
