Add dependency on libevent where required.

net/net.gyp

 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 179 matching lines @@
           },
         ],
         [ 'OS == "win"', {
             'dependencies': [
               # For nss_memio.{c,h}, which require only NSPR.
               '../third_party/nss/nss.gyp:nspr',
               'tld_cleanup',
             ],
           },
           {  # else: OS != "win"
+            'dependencies': [
+              '../third_party/libevent/libevent.gyp:libevent',
+            ],
             'sources!': [
               'base/winsock_init.cc',
             ],
           },
         ],
         [ 'OS == "mac"', {
             'dependencies': [
               # For nss_memio.{c,h}, which require only NSPR.
               '../third_party/nss/nss.gyp:nspr',
             ],
@@ skipping 369 matching lines @@
               'third_party/nss/ssl.gyp:ssl',
               'tld_cleanup',
             ],
             'link_settings': {
               'libraries': [
                 '-lIphlpapi.lib',
               ],
             },
           },
           {  # else: OS != "win"
+            'dependencies': [
+              '../third_party/libevent/libevent.gyp:libevent',
+            ],
             'sources!': [
               'proxy/proxy_resolver_winhttp.cc',
             ],
           },
         ],
         [ 'OS == "mac"', {
             'dependencies': [
               '../third_party/nss/nss.gyp:nss',
               'third_party/nss/ssl.gyp:ssl',
             ],
@@ skipping 453 matching lines @@
       ],
     }],
   ],
 }
 
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