Refactor: Change the interface HostResolver::DisableIPv6() to HostResolver::SetDefaultA...

net/base/host_resolver_impl.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.
 
 #ifndef NET_BASE_HOST_RESOLVER_IMPL_H_
 #define NET_BASE_HOST_RESOLVER_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 52 matching lines @@
                       RequestHandle* out_req,
                       LoadLog* load_log);
   virtual void CancelRequest(RequestHandle req);
   virtual void AddObserver(Observer* observer);
   virtual void RemoveObserver(Observer* observer);
   virtual HostCache* GetHostCache();
 
   // TODO(eroman): temp hack for http://crbug.com/15513
   virtual void Shutdown();
 
-  // Prevents returning IPv6 addresses from Resolve().
-  // The default is to allow IPv6 results.
-  virtual void DisableIPv6(bool disable_ipv6) {
-    disable_ipv6_ = disable_ipv6;
+  virtual void SetDefaultAddressFamily(AddressFamily address_family) {
+    default_address_family_ = address_family;
   }
 
  private:
   class Job;
   class Request;
   typedef std::vector<Request*> RequestsList;
   typedef HostCache::Key Key;
   typedef std::map<Key, scoped_refptr<Job> > JobMap;
   typedef std::vector<Observer*> ObserversList;
 
@@ skipping 45 matching lines @@
   ObserversList observers_;
 
   // Monotonically increasing ID number to assign to the next request.
   // Observers are the only consumers of this ID number.
   int next_request_id_;
 
   // The procedure to use for resolving host names. This will be NULL, except
   // in the case of unit-tests which inject custom host resolving behaviors.
   scoped_refptr<HostResolverProc> resolver_proc_;
 
-  // Set to true if only IPv4 address are to be returned by Resolve().
-  bool disable_ipv6_;
+  // Address family to use when the request doesn't specify one.
+  AddressFamily default_address_family_;
 
   // TODO(eroman): temp hack for http://crbug.com/15513
   bool shutdown_;
 
   DISALLOW_COPY_AND_ASSIGN(HostResolverImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_HOST_RESOLVER_IMPL_H_