Clear cached QUIC network stats when a QUIC handshake fails.

net/http/http_server_properties_manager.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 NET_HTTP_HTTP_SERVER_PROPERTIES_MANAGER_H_
 #define NET_HTTP_HTTP_SERVER_PROPERTIES_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 132 matching lines @@
       const AlternativeService& alternative_service) override;
   void ConfirmAlternativeService(
       const AlternativeService& alternative_service) override;
   const AlternativeServiceMap& alternative_service_map() const override;
   std::unique_ptr<base::Value> GetAlternativeServiceInfoAsValue()
       const override;
   bool GetSupportsQuic(IPAddress* last_address) const override;
   void SetSupportsQuic(bool used_quic, const IPAddress& last_address) override;
   void SetServerNetworkStats(const url::SchemeHostPort& server,
                              ServerNetworkStats stats) override;
+  void ClearServerNetworkStats(const url::SchemeHostPort& server) override;
   const ServerNetworkStats* GetServerNetworkStats(
       const url::SchemeHostPort& server) override;
   const ServerNetworkStatsMap& server_network_stats_map() const override;
   bool SetQuicServerInfo(const QuicServerId& server_id,
                          const std::string& server_info) override;
   const std::string* GetQuicServerInfo(const QuicServerId& server_id) override;
   const QuicServerInfoMap& quic_server_info_map() const override;
   size_t max_server_configs_stored_in_properties() const override;
   void SetMaxServerConfigsStoredInProperties(
       size_t max_server_configs_stored_in_properties) override;
   bool IsInitialized() const override;
 
  protected:
   // The location where ScheduleUpdatePrefsOnNetworkThread was called.
+  // Must be kept up to date with HttpServerPropertiesUpdatePrefsLocation in
+  // histograms.xml.
   enum Location {
     SUPPORTS_SPDY = 0,
     HTTP_11_REQUIRED = 1,
     SET_ALTERNATIVE_SERVICES = 2,
     MARK_ALTERNATIVE_SERVICE_BROKEN = 3,
     MARK_ALTERNATIVE_SERVICE_RECENTLY_BROKEN = 4,
     CONFIRM_ALTERNATIVE_SERVICE = 5,
     CLEAR_ALTERNATIVE_SERVICE = 6,
     // deprecated: SET_SPDY_SETTING = 7,
     // deprecated: CLEAR_SPDY_SETTINGS = 8,
     // deprecated: CLEAR_ALL_SPDY_SETTINGS = 9,
     SET_SUPPORTS_QUIC = 10,
     SET_SERVER_NETWORK_STATS = 11,
     DETECTED_CORRUPTED_PREFS = 12,
     SET_QUIC_SERVER_INFO = 13,
-    NUM_LOCATIONS = 14,
+    CLEAR_SERVER_NETWORK_STATS = 14,
+    NUM_LOCATIONS = 15,
   };
 
   // --------------------
   // SPDY related methods
 
   // These are used to delay updating of the cached data in
   // |http_server_properties_impl_| while the preferences are changing, and
   // execute only one update per simultaneous prefs changes.
   void ScheduleUpdateCacheOnPrefThread();
 
@@ skipping 120 matching lines @@
   // Used to get |weak_ptr_| to self on the network thread.
   std::unique_ptr<base::WeakPtrFactory<HttpServerPropertiesManager>>
       network_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesManager);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_MANAGER_H_