Also run net_unittests on the flakiness bots.
Also run net_unittests on the flakiness bots.

BUG=75767
Review URL: http://codereview.chromium.org/7549013

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@95124 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build