Mac: Fix duplicate definition of two symbols.

 ar -tv ../clang/sym/Release/libbrowser.a | grep login_database

shows that both login_database_mac.cc and login_database_posix.cc end up being included in the build. That seems wrong.

Review URL: http://codereview.chromium.org/2859012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@50400 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed