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

rlz/win/lib/process_info.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.
 //
 // Information about the current process.
 
 #include "rlz/win/lib/process_info.h"
 
 #include <windows.h>
 
@@ skipping 41 matching lines @@
   *group = 0;
 
   // groups are listed in DECREASING order of importance
   // (eg. If a user is a member of both the admin group and
   // the power user group, it is more useful to list the user
   // as an admin)
   DWORD user_groups[] =  {DOMAIN_ALIAS_RID_ADMINS,
                           DOMAIN_ALIAS_RID_POWER_USERS};
   SID_IDENTIFIER_AUTHORITY nt_authority = {SECURITY_NT_AUTHORITY};
 
-  for (int i = 0; i < arraysize(user_groups) && *group == 0; ++i) {
+  for (size_t i = 0; i < arraysize(user_groups) && *group == 0; ++i) {
     PSID current_group;
     if (AllocateAndInitializeSid(&nt_authority, 2,
                                  SECURITY_BUILTIN_DOMAIN_RID,
                                  user_groups[i], 0, 0, 0, 0,
                                  0, 0, &current_group)) {
       BOOL current_level;
       if (CheckTokenMembership(NULL, current_group, &current_level) &&
           current_level) {
         *group = user_groups[i];
       }
@@ skipping 42 matching lines @@
   }
 
   evaluated = true;
   if (!has_rights)
     ASSERT_STRING("ProcessInfo::HasAdminRights: Does not have admin rights.");
 
   return has_rights;
 }
 
 };  // namespace