Remove ServiceDiscoveryClient* from PrivetHTTPAsynchronousFactoryImpl interface

chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.h

 // Copyright 2014 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_PRIVET_HTTP_ASYNCHRONOUS_FACTORY_IMPL_H_
 #define CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_HTTP_ASYNCHRONOUS_FACTORY_IMPL_H_
 
 #include "chrome/browser/local_discovery/privet_http.h"
 #include "chrome/browser/local_discovery/privet_http_asynchronous_factory.h"
 #include "chrome/common/local_discovery/service_discovery_client.h"
 
 namespace local_discovery {
 
 class PrivetHTTPAsynchronousFactoryImpl : public PrivetHTTPAsynchronousFactory {
  public:
-  PrivetHTTPAsynchronousFactoryImpl(
-      ServiceDiscoveryClient* service_discovery_client,
+  explicit PrivetHTTPAsynchronousFactoryImpl(
       net::URLRequestContextGetter* request_context);
   ~PrivetHTTPAsynchronousFactoryImpl() override;
 
   scoped_ptr<PrivetHTTPResolution> CreatePrivetHTTP(
       const std::string& name,
       const net::HostPortPair& address,
       const ResultCallback& callback) override;
 
  private:
   class ResolutionImpl : public PrivetHTTPResolution {
    public:
     ResolutionImpl(const std::string& name,
                    const net::HostPortPair& address,
                    const ResultCallback& callback,
-                   ServiceDiscoveryClient* service_discovery_client,
                    net::URLRequestContextGetter* request_context);
     ~ResolutionImpl() override;
 
     void Start() override;
     const std::string& GetName() override;
 
    private:
     void ResolveComplete(bool success,
                          const net::IPAddressNumber& address_ipv4,
                          const net::IPAddressNumber& address_ipv6);
 
     std::string name_;
     scoped_ptr<LocalDomainResolver> resolver_;
     net::HostPortPair hostport_;
     ResultCallback callback_;
     scoped_refptr<net::URLRequestContextGetter> request_context_;
+    scoped_refptr<ServiceDiscoverySharedClient> service_discovery_client_;
   };
 
-  ServiceDiscoveryClient* service_discovery_client_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 };
 
 }  // namespace local_discovery
 
 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_HTTP_ASYNCHRONOUS_FACTORY_IMPL_H_