components: Cleanup class/struct fwd declarations

components/data_reduction_proxy/core/browser/data_reduction_proxy_delegate.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 COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_DELEGATE_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_DELEGATE_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "net/base/proxy_delegate.h"
 #include "net/proxy/proxy_retry_info.h"
 #include "net/proxy/proxy_server.h"
 #include "url/gurl.h"
 
 namespace net {
 class HostPortPair;
 class HttpRequestHeaders;
 class HttpResponseHeaders;
 class NetLog;
 class ProxyConfig;
 class ProxyInfo;
 class ProxyService;
-class URLRequest;
 }
 
 namespace data_reduction_proxy {
 
 class DataReductionProxyBypassStats;
 class DataReductionProxyConfig;
 class DataReductionProxyConfigurator;
 class DataReductionProxyEventCreator;
-class DataReductionProxyRequestOptions;
 
 class DataReductionProxyDelegate : public net::ProxyDelegate {
  public:
   // ProxyDelegate instance is owned by io_thread. |auth_handler| and |config|
   // outlives this class instance.
   explicit DataReductionProxyDelegate(
       DataReductionProxyConfig* config,
       const DataReductionProxyConfigurator* configurator,
       DataReductionProxyEventCreator* event_creator,
       DataReductionProxyBypassStats* bypass_stats,
@@ skipping 80 matching lines @@
 // This is visible for test purposes.
 void OnResolveProxyHandler(const GURL& url,
                            const std::string& method,
                            const net::ProxyConfig& data_reduction_proxy_config,
                            const net::ProxyRetryInfoMap& proxy_retry_info,
                            const DataReductionProxyConfig* config,
                            net::ProxyInfo* result);
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_DELEGATE_H_