commit b16ec8025bf57a42b22e937c35bec5a4c8d65860
author Chris Masone <cmasone@chromium.org> Mon Dec 02 17:45:26 2013
committer chrome-internal-fetch <chrome-internal-fetch@google.com> Tue Dec 03 04:11:19 2013
tree 544f58b9a1f82dc4e8b886178d535fac4993a4e1
parent 3b0d103a7750d4ca3632febb08db43c4ca1f7600

Make SystemUtils a proper interface

Instead of having MockSystemUtils inherit from a concrete class,
make SystemUtils a proper interface and create SystemUtilsImpl
for real stuff to use.

This is a first step in making MockSystemUtils into a fake.

BUG=chromium:303400
TEST=unit

Change-Id: Icf1d51d4c7ddaea2168f2dfb303b48eddb609f8d
Reviewed-on: https://chromium-review.googlesource.com/178487
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>