Platform cleanup in chrome/browser/net.

chrome/browser/net/dns_slave.h

 // 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.
 
 // A DnsSlave object processes hostname lookups
 // via DNS on a single thread, waiting for that blocking
 // call to complete, and then getting its next hostname
 // from its associated DnsMaster object.
 // Since this class only is concerned with prefetching
 // to warm the underlying DNS cache, the actual IP
@@ skipping 24 matching lines @@
                                              const struct addrinfo* hints,
                                              struct addrinfo** result);
 void SetAddrinfoCallbacks(GetAddrInfoFunction getaddrinfo,
                           FreeAddrInfoFunction freeaddrinfo);
 
 GetAddrInfoFunction get_getaddrinfo();
 FreeAddrInfoFunction get_freeaddrinfo();
 
 class DnsSlave {
  public:
-  DnsSlave(DnsMaster* master, int slave_index)
-      : slave_index_(slave_index),
-        master_(master) {
+  DnsSlave(DnsMaster* master, size_t slave_index)
+      : master_(master),
+        slave_index_(slave_index) {
   }
 
   ~DnsSlave() {
     master_ = NULL;
   }
 
   static DWORD WINAPI ThreadStart(void* pThis);
 
   unsigned Run();
 
  private:
   std::string hostname_;  // Name being looked up.
 
   DnsMaster* master_;  // Master that started us.
-  int slave_index_;  // Our index into DnsMaster's array.
+  size_t slave_index_;  // Our index into DnsMaster's array.
 
   void BlockingDnsLookup();
 
   DISALLOW_COPY_AND_ASSIGN(DnsSlave);
 };
 
 }  // namespace chrome_browser_net
 
 #endif  // CHROME_BROWSER_NET_DNS_SLAVE_H_