Platform cleanup in chrome/browser/net.

chrome/browser/net/dns_global.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 "chrome/browser/net/dns_global.h"
 
 #include <map>
 #include <string>
 
 #include "base/stats_counters.h"
@@ skipping 169 matching lines @@
   delete first_resolutions;
   first_resolutions = NULL;
   delete resolutions;
   resolutions = NULL;
   delete lock;
   lock = NULL;
 }
 
 void PrefetchObserver::OnStartResolution(const std::string& host_name,
                                          void* context) {
-  DCHECK_NE(0, host_name.length());
+  DCHECK_NE(0U, host_name.length());
   DnsHostInfo navigation_info;
   navigation_info.SetHostname(host_name);
   navigation_info.SetStartedState();
 
   NavigatingTo(host_name);
 
   AutoLock auto_lock(*lock);
   (*resolutions)[context] = navigation_info;
 }
 
@@ skipping 260 matching lines @@
   if (hostnames.size() > 0)
     DnsPrefetchMotivatedList(hostnames, DnsHostInfo::STARTUP_LIST_MOTIVATED);
   else  // Start a thread.
     DnsMotivatedPrefetch(std::string("www.google.com"),
                          DnsHostInfo::STARTUP_LIST_MOTIVATED);
 }
 
 
 }  // namespace chrome_browser_net