Implement multiple alternative services per origin.

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 <deque>
 #include <map>
 #include <set>
@@ skipping 69 matching lines @@
 
   base::WeakPtr<HttpServerProperties> GetWeakPtr() override;
   void Clear() override;
   bool SupportsRequestPriority(const HostPortPair& server) override;
   bool GetSupportsSpdy(const HostPortPair& server) override;
   void SetSupportsSpdy(const HostPortPair& server, bool support_spdy) override;
   bool RequiresHTTP11(const HostPortPair& server) override;
   void SetHTTP11Required(const HostPortPair& server) override;
   void MaybeForceHTTP11(const HostPortPair& server,
                         SSLConfig* ssl_config) override;
-  AlternativeService GetAlternativeService(const HostPortPair& origin) override;
-  void SetAlternativeService(const HostPortPair& origin,
+  AlternativeServiceVector GetAlternativeServices(
+      const HostPortPair& origin) override;
+  void AddAlternativeService(const HostPortPair& origin,
                              const AlternativeService& alternative_service,
                              double alternative_probability) override;
   void MarkAlternativeServiceBroken(
       const AlternativeService& alternative_service) override;
   void MarkAlternativeServiceRecentlyBroken(
       const AlternativeService& alternative_service) override;
   bool IsAlternativeServiceBroken(
       const AlternativeService& alternative_service) const override;
   bool WasAlternativeServiceRecentlyBroken(
       const AlternativeService& alternative_service) override;
   void ConfirmAlternativeService(
       const AlternativeService& alternative_service) override;
-  void ClearAlternativeService(const HostPortPair& origin) override;
+  void ClearAlternativeServices(const HostPortPair& origin) override;
   const AlternativeServiceMap& alternative_service_map() const override;
   scoped_ptr<base::Value> GetAlternativeServiceInfoAsValue() const override;
   void SetAlternativeServiceProbabilityThreshold(double threshold) override;
   const SettingsMap& GetSpdySettings(
       const HostPortPair& host_port_pair) override;
   bool SetSpdySetting(const HostPortPair& host_port_pair,
                       SpdySettingsIds id,
                       SpdySettingsFlags flags,
                       uint32 value) override;
   void ClearSpdySettings(const HostPortPair& host_port_pair) override;
@@ skipping 59 matching lines @@
   double alternative_service_probability_threshold_;
 
   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_