Some users are seeing exceptions when the Android Resolver creates and
deletes temporary files.  This *may* be caused by anti-virus, Unity
re-indexing directories or all other manner of processes on machines.

This patch catches any exceptions related to file deletion and simply
bubbles up any failures via a list that the caller can optionally report.

Fixes #198

Bug: 132071174
Change-Id: I7985d4045e190222511ea3ba20ac30b4d6a78654