Ensure handle_ fits in FD_SETSIZE.

Speculative attempt to diagnose stack corruption issues.

BUG=313843
TEST=none

Review URL: https://codereview.chromium.org/54993006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232449 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed