Refactor StringPiece hash.

net/http/http_server_properties_impl.h

 // Copyright (c) 2012 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_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
 #define NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
-#include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/values.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/linked_hash_map.h"
 #include "net/base/net_export.h"
 #include "net/http/http_server_properties.h"
 
 namespace base {
 class ListValue;
 }
 
-namespace BASE_HASH_NAMESPACE {
+namespace net {
 
-template <>
-struct hash<net::AlternativeService> {
+struct AlternativeServiceHash {
   size_t operator()(const net::AlternativeService& entry) const {
-    return entry.protocol ^ hash<std::string>()(entry.host) ^ entry.port;
+    return entry.protocol ^ std::hash<std::string>()(entry.host) ^ entry.port;
   }
 };
 
-}  // namespace BASE_HASH_NAMESPACE
-
-namespace net {
-
 // The implementation for setting/retrieving the HTTP server properties.
 class NET_EXPORT HttpServerPropertiesImpl
     : public HttpServerProperties,
       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   HttpServerPropertiesImpl();
   ~HttpServerPropertiesImpl() override;
 
   // Initializes |spdy_servers_map_| with the servers (host/port) from
   // |spdy_servers| that either support SPDY or not.
@@ skipping 91 matching lines @@
   // |spdy_servers_map_| has flattened representation of servers (host, port)
   // that either support or not support SPDY protocol.
   typedef base::MRUCache<std::string, bool> SpdyServerHostPortMap;
   typedef std::map<HostPortPair, HostPortPair> CanonicalHostMap;
   typedef std::vector<std::string> CanonicalSufficList;
   typedef std::set<HostPortPair> Http11ServerHostPortSet;
 
   // Linked hash map from AlternativeService to expiration time.  This container
   // is a queue with O(1) enqueue and dequeue, and a hash_map with O(1) lookup
   // at the same time.
-  typedef linked_hash_map<AlternativeService, base::TimeTicks>
+  typedef linked_hash_map<AlternativeService,
+                          base::TimeTicks,
+                          AlternativeServiceHash>
       BrokenAlternativeServices;
   // Map to the number of times each alternative service has been marked broken.
   typedef std::map<AlternativeService, int> RecentlyBrokenAlternativeServices;
 
   // Return the iterator for |server|, or for its canonical host, or end.
   AlternativeServiceMap::const_iterator GetAlternateProtocolIterator(
       const HostPortPair& server);
 
   // Return the canonical host for |server|, or end if none exists.
   CanonicalHostMap::const_iterator GetCanonicalHost(HostPortPair server) const;
@@ skipping 28 matching lines @@
   size_t max_server_configs_stored_in_properties_;
 
   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_