Remove HTTP pipelining support.

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 <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
-#include "base/containers/mru_cache.h"
 #include "base/gtest_prod_util.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/values.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
-#include "net/http/http_pipelined_host_capability.h"
 #include "net/http/http_server_properties.h"
 
 namespace base {
 class ListValue;
 }
 
 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();
   virtual ~HttpServerPropertiesImpl();
 
   // Initializes |spdy_servers_map_| with the servers (host/port) from
   // |spdy_servers| that either support SPDY or not.
   void InitializeSpdyServers(std::vector<std::string>* spdy_servers,
                              bool support_spdy);
 
   void InitializeAlternateProtocolServers(
       AlternateProtocolMap* alternate_protocol_servers);
 
   void InitializeSpdySettingsServers(SpdySettingsMap* spdy_settings_map);
 
-  // Initializes |pipeline_capability_map_| with the servers (host/port) from
-  // |pipeline_capability_map| that either support HTTP pipelining or not.
-  void InitializePipelineCapabilities(
-      const PipelineCapabilityMap* pipeline_capability_map);
-
   // Get the list of servers (host/port) that support SPDY. The max_size is the
   // number of MRU servers that support SPDY that are to be returned.
   void GetSpdyServerList(base::ListValue* spdy_server_list,
                          size_t max_size) const;
 
   // Returns flattened string representation of the |host_port_pair|. Used by
   // unittests.
   static std::string GetFlattenedSpdyServer(
       const net::HostPortPair& host_port_pair);
 
   // Debugging to simulate presence of an AlternateProtocol.
   // If we don't have an alternate protocol in the map for any given host/port
   // pair, force this ProtocolPortPair.
   static void ForceAlternateProtocol(const PortAlternateProtocolPair& pair);
   static void DisableForcedAlternateProtocol();
 
-  // Changes the number of host/port pairs we remember pipelining capability
-  // for. A larger number means we're more likely to be able to pipeline
-  // immediately if a host is known good, but uses more memory. This function
-  // can only be called if |pipeline_capability_map_| is empty.
-  void SetNumPipelinedHostsToRemember(int max_size);
-
   // -----------------------------
   // HttpServerProperties methods:
   // -----------------------------
 
   // Gets a weak pointer for this object.
   virtual base::WeakPtr<HttpServerProperties> GetWeakPtr() OVERRIDE;
 
   // Deletes all data.
   virtual void Clear() OVERRIDE;
 
@@ skipping 54 matching lines @@
 
   // Returns all persistent SPDY settings.
   virtual const SpdySettingsMap& spdy_settings_map() const OVERRIDE;
 
   virtual void SetServerNetworkStats(const HostPortPair& host_port_pair,
                                      NetworkStats stats) OVERRIDE;
 
   virtual const NetworkStats* GetServerNetworkStats(
       const HostPortPair& host_port_pair) const OVERRIDE;
 
-  virtual HttpPipelinedHostCapability GetPipelineCapability(
-      const HostPortPair& origin) OVERRIDE;
-
-  virtual void SetPipelineCapability(
-      const HostPortPair& origin,
-      HttpPipelinedHostCapability capability) OVERRIDE;
-
-  virtual void ClearPipelineCapabilities() OVERRIDE;
-
-  virtual PipelineCapabilityMap GetPipelineCapabilityMap() const OVERRIDE;
-
  private:
-  typedef base::MRUCache<
-      HostPortPair, HttpPipelinedHostCapability> CachedPipelineCapabilityMap;
   // |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, NetworkStats> ServerNetworkStatsMap;
   typedef std::map<HostPortPair, HostPortPair> CanonicalHostMap;
   typedef std::vector<std::string> CanonicalSufficList;
   // List of broken host:ports and the times when they can be expired.
   struct BrokenAlternateProtocolEntry {
     HostPortPair server;
     base::TimeTicks when;
@@ skipping 11 matching lines @@
   void ScheduleBrokenAlternateProtocolMappingsExpiration();
 
   SpdyServerHostPortMap spdy_servers_map_;
 
   AlternateProtocolMap alternate_protocol_map_;
   BrokenAlternateProtocolList broken_alternate_protocol_list_;
   BrokenAlternateProtocolMap broken_alternate_protocol_map_;
 
   SpdySettingsMap spdy_settings_map_;
   ServerNetworkStatsMap server_network_stats_map_;
-  scoped_ptr<CachedPipelineCapabilityMap> pipeline_capability_map_;
   // Contains a map of servers which could share the same alternate protocol.
   // Map from a Canonical host/port (host is some postfix of host names) to an
   // actual origin, which has a plausible alternate protocol mapping.
   CanonicalHostMap canonical_host_to_origin_map_;
   // Contains list of suffixes (for exmaple ".c.youtube.com",
   // ".googlevideo.com") of canoncial hostnames.
   CanonicalSufficList canoncial_suffixes_;
 
   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_