mac: lower static initializer expectations by 2.

BUG=94925
TBR=garykac@chromium.org

Review URL: https://codereview.chromium.org/33113004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229980 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229980