Fix net/ fuzzers.

They were broken in https://codereview.chromium.org/2151013002. They
depend on a global that's never directly used being linked in, which
that CL broke.

BUG=628503

Review-Url: https://codereview.chromium.org/2155713002
Cr-Commit-Position: refs/heads/master@{#405813}
1 file changed