[Image Fetcher] Add timeout to image data downloading

Bug: 930931
Change-Id: I3e76be5268f60c09653adfa21440ddff543a5cf5
Reviewed-on: https://chromium-review.googlesource.com/c/1465041
Reviewed-by: Patrick Noland <pnoland@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631514}
1 file changed