Reneabled ExtensionApiTest.ChromeOSInfoPrivateTest.

BUG=314623
TEST=ExtensionApiTest.ChromeOSInfoPrivateTest

Review URL: https://codereview.chromium.org/57133003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233038 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233038
Blink roll 161254:161319

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=161255:161319&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/59393004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233039 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233039