Extract resolution logic from PrivetHTTPAsynchronousFactory

chrome/browser/local_discovery/endpoint_resolver.h

Index: chrome/browser/local_discovery/endpoint_resolver.h
diff --git a/chrome/browser/local_discovery/endpoint_resolver.h b/chrome/browser/local_discovery/endpoint_resolver.h
new file mode 100644
index 0000000000000000000000000000000000000000..687c15bb78533b214b7621f8a41cae0dfbe421ff
--- /dev/null
+++ b/chrome/browser/local_discovery/endpoint_resolver.h
@@ -0,0 +1,56 @@
+// Copyright 2015 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 CHROME_BROWSER_LOCAL_DISCOVERY_ENDPOINT_RESOLVER_H_
+#define CHROME_BROWSER_LOCAL_DISCOVERY_ENDPOINT_RESOLVER_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/common/local_discovery/service_discovery_client.h"
+
+namespace net {
+class HostPortPair;
+class IPEndPoint;
+}
+
+namespace local_discovery {
+
+class ServiceDiscoverySharedClient;
+
+class EndpointResolver {
+ public:
+  using ResultCallback = base::Callback<void(const net::IPEndPoint& endpoint)>;
+
+  EndpointResolver();
+  ~EndpointResolver();
+
+  void Start(const std::string& service_name, const ResultCallback& callback);
+
+  void Start(const net::HostPortPair& address, const ResultCallback& callback);
+
+ private:
+  void ServiceResolveComplete(const ResultCallback& callback,
+                              ServiceResolver::RequestStatus result,
+                              const ServiceDescription& description);
+
+  void DomainResolveComplete(uint16 port,
+                             const ResultCallback& callback,
+                             bool success,
+                             const net::IPAddressNumber& address_ipv4,
+                             const net::IPAddressNumber& address_ipv6);
+
+ private:
+  scoped_refptr<ServiceDiscoverySharedClient> service_discovery_client_;
+  scoped_ptr<ServiceResolver> service_resolver_;
+  scoped_ptr<LocalDomainResolver> domain_resolver_;
+
+  DISALLOW_COPY_AND_ASSIGN(EndpointResolver);
+};
+
+}  // namespace local_discovery
+
+#endif  // CHROME_BROWSER_LOCAL_DISCOVERY_ENDPOINT_RESOLVER_H_