[Mac] Remove potential for malloc in CrMallocErrorBreak().

Calling into malloc library from the malloc library error handler is
probably a bad idea.

BUG=160555


Review URL: https://chromiumcodereview.appspot.com/11363208

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167722 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed