components: Cleanup class/struct fwd declarations

components/data_reduction_proxy/core/common/data_reduction_proxy_params_test_utils.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_PARAMS_TEST_UTILS_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_PARAMS_TEST_UTILS_H_
 
 #include <vector>
 
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_params.h"
 
-namespace base {
-class TimeDelta;
-}
-
 namespace net {
-class ProxyConfig;
 class ProxyServer;
-class URLRequest;
 }
 
 namespace data_reduction_proxy {
 
 class TestDataReductionProxyParams : public DataReductionProxyParams {
  public:
   // Used to emulate having constants defined by the preprocessor.
   enum HasNames {
     HAS_NOTHING = 0x0,
     HAS_ORIGIN = 0x2,
@@ skipping 26 matching lines @@
 
  private:
   std::string GetDefinition(unsigned int has_def,
                             const std::string& definition) const;
 
   unsigned int has_definitions_;
   bool init_result_;
 };
 }  // namespace data_reduction_proxy
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_PARAMS_TEST_UTILS_H_