Implement the PAC js-binding for "myIpAddress()".

net/base/net_util_unittest.cc

 // Copyright (c) 2006-2008 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.
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_util.h"
@@ skipping 851 matching lines @@
       0x98, 0x76, 0x54, 0x32, 0x10},
      "fedc:ba98:7654:3210:fedc:ba98:7654:3210"},
   };
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
     const addrinfo* ai = GetIPv6Address(tests[i].addr);
     std::string result = net::NetAddressToString(ai);
     EXPECT_EQ(std::string(tests[i].result), result);
   }
 }
+
+TEST(NetUtilTest, GetMyHostName) {
+  // We can't check the result of GetMyHostName() directly, since the result
+  // will differ across machines. Our goal here is to simply exercise the
+  // code path, and check that things "look about right".
+  std::string my_hostname = net::GetMyHostName();
+  EXPECT_FALSE(my_hostname.empty());
+}