components: Cleanup class/struct fwd declarations

components/packed_ct_ev_whitelist/packed_ct_ev_whitelist.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_PACKED_CT_EV_WHITELIST_PACKED_CT_EV_WHITELIST_H_
 #define COMPONENTS_PACKED_CT_EV_WHITELIST_PACKED_CT_EV_WHITELIST_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/version.h"
 #include "net/cert/ct_ev_whitelist.h"
 
-namespace base {
-class FilePath;
-}
-
 namespace packed_ct_ev_whitelist {
 
 // An implementation of the EVCertsWhitelist that gets its data packed using
 // Golomb coding to encode the difference between subsequent hash values.
 // Format of the packed list:
 // * First 8 bytes: First hash
 // * Repeating Golomb-coded number which is the numeric difference of the
 //   previous hash value from this one
 //
 // The resulting, unpacked list is a sorted list of hash values that can be
@@ skipping 49 matching lines @@
 };
 
 // Sets the EV certificate hashes whitelist in the SSLConfigService
 // to the provided |whitelist|, if valid. Otherwise, does nothing.
 // To set the new whitelist, this function dispatches a task to the IO thread.
 void SetEVCertsWhitelist(scoped_refptr<net::ct::EVCertsWhitelist> whitelist);
 
 }  // namespace packed_ct_ev_whitelist
 
 #endif  // COMPONENTS_PACKED_CT_EV_WHITELIST_PACKED_CT_EV_WHITELIST_H_