GitLab

Also:
- Make it fatal if archive file is not on the filesystem.
- Remove broken archive file links.
- Move the test from test_utils/ to unittest/.


BUG=None.
TEST=content/test/gpu/run_unittests page_set && tools/perf/run_tests page_set

Review URL: https://codereview.chromium.org/286543004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273890 0039d316-1c4b-4281-b951-d872f2087c98