components: Cleanup class/struct fwd declarations

components/data_reduction_proxy/core/common/data_reduction_proxy_params.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_COMMON_DATA_REDUCTION_PROXY_PARAMS_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_REDUCTION_PROXY_PARAMS_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_config_values.h"
 #include "net/proxy/proxy_server.h"
 #include "url/gurl.h"
 
-namespace base {
-class TimeDelta;
-}
-
 namespace net {
-class HostPortPair;
 class ProxyServer;
 }
 
 namespace data_reduction_proxy {
 
 // The data_reduction_proxy::params namespace is a collection of methods to
 // determine the operating parameters of the Data Reduction Proxy as specified
 // by field trials and command line switches.
 namespace params {
 
@@ skipping 218 matching lines @@
 
   bool use_override_proxies_for_http_;
   std::vector<net::ProxyServer> override_proxies_for_http_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyParams);
 };
 
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_REDUCTION_PROXY_PARAMS_H_