Remove unnecessary wrapping of IOException in DiskCacheToken.
Instead, catch the exception at the artifact level and log it
with some context.

Change-Id: Idf40e5c09dc2b9a91c8ae96d8ba79f6f69890410
Review-Link: https://gwt-review.googlesource.com/#/c/2020/

Review by: mdempsky@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@11537 8db76d5a-ed1c-0410-87a9-c151d255dfc7
6 files changed