Separate ProxyResolverMac and ProxyConfigServiceMac into their own files

net/proxy/proxy_resolver_mac.h

 // Copyright (c) 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_PROXY_PROXY_RESOLVER_MAC_H_
 #define NET_PROXY_PROXY_RESOLVER_MAC_H_
 
 #include <string>
 
 #include "googleurl/src/gurl.h"
 #include "net/base/net_errors.h"
-#include "net/proxy/proxy_config_service.h"
 #include "net/proxy/proxy_resolver.h"
 
 namespace net {
 
 // Implementation of ProxyResolver that uses the Mac CFProxySupport to implement
 // proxies.
 class ProxyResolverMac : public ProxyResolver {
  public:
   ProxyResolverMac() : ProxyResolver(false /*expects_pac_bytes*/) {}
 
@@ skipping 12 matching lines @@
   virtual int SetPacScript(const GURL& pac_url,
                            const std::string& /*pac_bytes*/,
                            CompletionCallback* /*callback*/) {
     pac_url_ = pac_url;
     return OK;
   }
 
   GURL pac_url_;
 };
 
-class ProxyConfigServiceMac : public ProxyConfigService {
- public:
-  // ProxyConfigService methods:
-  virtual int GetProxyConfig(ProxyConfig* config);
-};
-
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_RESOLVER_MAC_H_