Add IPC for DNS host address resolution.

content/browser/renderer_host/p2p/socket_dispatcher_host.h

Index: content/browser/renderer_host/p2p/socket_dispatcher_host.h
diff --git a/content/browser/renderer_host/p2p/socket_dispatcher_host.h b/content/browser/renderer_host/p2p/socket_dispatcher_host.h
index e704e9d986a75a0bea509bdeea27c18d4f94684b..54a91c6260ee271dcb715d6b32ce9d6317d7e465 100644
--- a/content/browser/renderer_host/p2p/socket_dispatcher_host.h
+++ b/content/browser/renderer_host/p2p/socket_dispatcher_host.h
@@ -12,13 +12,17 @@
 #include "net/base/ip_endpoint.h"
 #include "net/base/network_change_notifier.h"
 
+namespace content {
+class ResourceContext;
+}  // namespace content
+
 class P2PSocketHost;
 
 class P2PSocketDispatcherHost
     : public BrowserMessageFilter,
       public net::NetworkChangeNotifier::IPAddressObserver {
  public:
-  P2PSocketDispatcherHost();
+  P2PSocketDispatcherHost(const content::ResourceContext* resource_context);
   virtual ~P2PSocketDispatcherHost();
 
   // BrowserMessageFilter overrides.
@@ -34,12 +38,18 @@ class P2PSocketDispatcherHost
   typedef std::pair<int32, int> ExtendedSocketId;
   typedef std::map<ExtendedSocketId, P2PSocketHost*> SocketsMap;
 
+  class DnsRequest;
+
   P2PSocketHost* LookupSocket(int32 routing_id, int socket_id);
 
   // Handlers for the messages coming from the renderer.
   void OnStartNetworkNotifications(const IPC::Message& msg);
   void OnStopNetworkNotifications(const IPC::Message& msg);
 
+  void OnGetHostAddress(const IPC::Message& msg,
+                        const std::string& host_name,
+                        int32 request_id);
+
   void OnCreateSocket(const IPC::Message& msg,
                       P2PSocketType type,
                       int socket_id,
@@ -57,6 +67,11 @@ class P2PSocketDispatcherHost
   void DoGetNetworkList();
   void SendNetworkList(const net::NetworkInterfaceList& list);
 
+  void OnAddressResolved(DnsRequest* request,
+                         const net::IPAddressNumber& result);
+
+  const content::ResourceContext* resource_context_;
+
   SocketsMap sockets_;
 
   bool monitoring_networks_;
@@ -65,6 +80,8 @@ class P2PSocketDispatcherHost
   // network list notifications.
   std::set<int> notifications_routing_ids_;
 
+  std::set<DnsRequest*> dns_requests_;
+
   DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcherHost);
 };