Try to fix build more after r234081 / r234112.

It looks like logging.h _always_ defines LOGGING_IS_OFFICIAL_BUILD, it's
just defined to 0 or 1. So check for the value of LOGGING_IS_OFFICIAL_BUILD
instead of its definedness.

BUG=315884
TBR=akalin@chromium.org

Review URL: https://codereview.chromium.org/66213008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234115 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234115