* Move the global "DnsResolutionObserver" code depended on by DNS prefetcher,...

net/base/client_socket_pool.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_CLIENT_SOCKET_POOL_H_
 #define NET_BASE_CLIENT_SOCKET_POOL_H_
 
 #include <deque>
 #include <map>
 #include <string>
 
 #include "base/ref_counted.h"
 #include "net/base/completion_callback.h"
+#include "net/base/host_resolver.h"
 #include "net/base/load_states.h"
 
 namespace net {
 
 class ClientSocket;
 class ClientSocketHandle;
-class HostResolver;
 
 // A ClientSocketPool is used to restrict the number of sockets open at a time.
 // It also maintains a list of idle persistent sockets.
 //
 class ClientSocketPool : public base::RefCounted<ClientSocketPool> {
  public:
   // Requests a connected socket for a group_name.
   //
   // There are four possible results from calling this function:
   // 1) RequestSocket returns OK and initializes |handle| with a reused socket.
   // 2) RequestSocket returns OK with a newly connected socket.
   // 3) RequestSocket returns ERR_IO_PENDING.  The handle will be added to a
   // wait list until a socket is available to reuse or a new socket finishes
   // connecting.  |priority| will determine the placement into the wait list.
   // 4) An error occurred early on, so RequestSocket returns an error code.
   //
   // If this function returns OK, then |handle| is initialized upon return.
   // The |handle|'s is_initialized method will return true in this case.  If a
   // ClientSocket was reused, then ClientSocketPool will call
   // |handle|->set_reused(true).  In either case, the socket will have been
   // allocated and will be connected.  A client might want to know whether or
   // not the socket is reused in order to know whether or not he needs to
   // perform SSL connection or tunnel setup or to request a new socket if he
   // encounters an error with the reused socket.
   //
   // If ERR_IO_PENDING is returned, then the callback will be used to notify the
   // client of completion.
   //
   virtual int RequestSocket(const std::string& group_name,
-                            const std::string& host,
-                            int port,
+                            const HostResolver::RequestInfo& resolve_info,
                             int priority,
                             ClientSocketHandle* handle,
                             CompletionCallback* callback) = 0;
 
   // Called to cancel a RequestSocket call that returned ERR_IO_PENDING.  The
   // same handle parameter must be passed to this method as was passed to the
   // RequestSocket call being cancelled.  The associated CompletionCallback is
   // not run.
   virtual void CancelRequest(const std::string& group_name,
                              const ClientSocketHandle* handle) = 0;
@@ skipping 27 matching lines @@
 
  private:
   friend class base::RefCounted<ClientSocketPool>;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSocketPool);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_CLIENT_SOCKET_POOL_H_