Stub binary for fuzzing DNS resolver.

net/net.gyp

Index: net/net.gyp
diff --git a/net/net.gyp b/net/net.gyp
index b347646f1830a683c4f662416293a56241f45155..267b27f295cc4c3584f1f52c4d08058b2521aa53 100644
--- a/net/net.gyp
+++ b/net/net.gyp
@@ -1693,6 +1693,17 @@
         'tools/crl_set_dump/crl_set_dump.cc',
       ],
     },
+    {
+      'target_name': 'dns_fuzz_stub',
+      'type': 'executable',
+      'dependencies': [
+        'net',
+        '../base/base.gyp:base',
+      ],
+      'sources': [
+        'tools/dns_fuzz_stub/dns_fuzz_stub.cc',
+      ],
+    },
   ],
   'conditions': [
      ['os_posix == 1 and OS != "mac" and OS != "android"', {