clang/win: Let remaining chromium_code targets build with -Wextra.

net/base/network_interfaces_unittest.cc

 // Copyright (c) 2012 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 "net/base/network_interfaces.h"
 
 #include <string>
 
 #include <ostream>
 
@@ skipping 145 matching lines @@
             phlpapi_lib.GetFunctionPointer("ConvertInterfaceIndexToLuid"));
 
     typedef NETIO_STATUS (WINAPI* ConvertInterfaceLuidToGuid)(NET_LUID*,
                                                               GUID*);
     ConvertInterfaceLuidToGuid luid_to_guid =
         reinterpret_cast<ConvertInterfaceLuidToGuid>(
             phlpapi_lib.GetFunctionPointer("ConvertInterfaceLuidToGuid"));
 
     if (interface_to_luid && luid_to_guid) {
       NET_LUID luid;
-      EXPECT_EQ(interface_to_luid(it->interface_index, &luid), NO_ERROR);
+      EXPECT_EQ(static_cast<DWORD>(NO_ERROR),
+                interface_to_luid(it->interface_index, &luid));
       GUID guid;
-      EXPECT_EQ(luid_to_guid(&luid, &guid), NO_ERROR);
+      EXPECT_EQ(static_cast<DWORD>(NO_ERROR), luid_to_guid(&luid, &guid));
       LPOLESTR name;
       StringFromCLSID(guid, &name);
       EXPECT_STREQ(base::UTF8ToWide(it->name).c_str(), name);
       CoTaskMemFree(name);
       continue;
     } else {
       EXPECT_LT(base::win::GetVersion(), base::win::VERSION_VISTA);
       EXPECT_LT(it->interface_index, 1u << 24u);  // Must fit 0.x.x.x.
       EXPECT_NE(it->interface_index, 0u);  // 0 means to use default.
     }
@@ skipping 567 matching lines @@
   TryChangeWifiOptions(0);
   TryChangeWifiOptions(WIFI_OPTIONS_DISABLE_SCAN);
   TryChangeWifiOptions(WIFI_OPTIONS_MEDIA_STREAMING_MODE);
   TryChangeWifiOptions(WIFI_OPTIONS_DISABLE_SCAN |
                        WIFI_OPTIONS_MEDIA_STREAMING_MODE);
 }
 
 }  // namespace
 
 }  // namespace net