This allows Googlers who didn't pass existing checks to use G storage and
the Pro version of Visual studio.

BUG=
TBR=maruel

Review URL: https://codereview.chromium.org/382373002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@283250 0039d316-1c4b-4281-b951-d872f2087c98