Fixed about flag not showing when experiment enabled from chrome sync

BUG=321393

Review URL: https://codereview.chromium.org/174433002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252480 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252480
Moving version script and gypi file to build\util.

BUG=343792

OK, it's been almost a week now, with regular pings to OWNERs, so I guess it's OK to TBR... It's only Gyp/script changes anyway... Feel free to uncheck the CQ box if you disagree...

TBR=beng@chromium.org, darin@chromium.org

Review URL: https://codereview.chromium.org/165893002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252481 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252481