Persist dynamically learned SPDY settings (like CWND).

chrome/browser/net/http_server_properties_manager.cc

 // Copyright (c) 2011 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.
 #include "chrome/browser/net/http_server_properties_manager.h"
 
 #include "base/bind.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/chrome_notification_types.h"
@@ skipping 13 matching lines @@
 // timer.
 const int64 kUpdateCacheDelayMs = 1000;
 
 // Time to wait before starting an update the preferences from the
 // spdy_servers cache. Scheduling another update during this period will
 // reset the timer.
 const int64 kUpdatePrefsDelayMs = 5000;
 
 typedef std::vector<std::string> StringVector;
 
-// String is host/port pair of spdy server.
-StringVector* ListValueToStringVector(const base::ListValue* list) {
-  StringVector* vector = new StringVector;
-
-  if (!list)
-    return vector;
-
-  vector->reserve(list->GetSize());
-  std::string s;
-  for (base::ListValue::const_iterator it = list->begin();
-       it != list->end(); ++it) {
-    if ((*it)->GetAsString(&s))
-      vector->push_back(s);
-  }
-
-  return vector;
-}
-
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 //  HttpServerPropertiesManager
 
 HttpServerPropertiesManager::HttpServerPropertiesManager(
     PrefService* pref_service)
     : pref_service_(pref_service),
-      setting_spdy_servers_(false),
-      setting_alternate_protocol_servers_(false) {
+      setting_prefs_(false) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(pref_service);
   ui_weak_ptr_factory_.reset(
       new base::WeakPtrFactory<HttpServerPropertiesManager>(this));
   ui_weak_ptr_ = ui_weak_ptr_factory_->GetWeakPtr();
-  ui_spdy_cache_update_timer_.reset(
-      new base::OneShotTimer<HttpServerPropertiesManager>);
-  ui_alternate_protocol_cache_update_timer_.reset(
+  ui_cache_update_timer_.reset(
       new base::OneShotTimer<HttpServerPropertiesManager>);
   pref_change_registrar_.Init(pref_service_);
-  pref_change_registrar_.Add(prefs::kSpdyServers, this);
-  pref_change_registrar_.Add(prefs::kAlternateProtocolServers, this);
+  pref_change_registrar_.Add(prefs::kHttpServerProperties, this);
 }
 
 HttpServerPropertiesManager::~HttpServerPropertiesManager() {
 }
 
 void HttpServerPropertiesManager::InitializeOnIOThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   http_server_properties_impl_.reset(new net::HttpServerPropertiesImpl());
 
   io_spdy_prefs_update_timer_.reset(
       new base::OneShotTimer<HttpServerPropertiesManager>);
-  io_alternate_protocol_prefs_update_timer_.reset(
-      new base::OneShotTimer<HttpServerPropertiesManager>);
 
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
-      base::Bind(&HttpServerPropertiesManager::UpdateSpdyCacheFromPrefs,
+      base::Bind(&HttpServerPropertiesManager::UpdateCacheFromPrefsOnUI,
                  ui_weak_ptr_));
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(
-          &HttpServerPropertiesManager::UpdateAlternateProtocolCacheFromPrefs,
-          ui_weak_ptr_));
 }
 
 void HttpServerPropertiesManager::ShutdownOnUIThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   // Cancel any pending updates, and stop listening for pref change updates.
-  ui_spdy_cache_update_timer_->Stop();
-  ui_alternate_protocol_cache_update_timer_->Stop();
+  ui_cache_update_timer_->Stop();
   ui_weak_ptr_factory_.reset();
   pref_change_registrar_.RemoveAll();
 }
 
 // static
 void HttpServerPropertiesManager::RegisterPrefs(PrefService* prefs) {
-  prefs->RegisterListPref(prefs::kSpdyServers, PrefService::UNSYNCABLE_PREF);
-  prefs->RegisterDictionaryPref(prefs::kAlternateProtocolServers,
+  prefs->RegisterDictionaryPref(prefs::kHttpServerProperties,
                                 PrefService::UNSYNCABLE_PREF);
 }
 
 void HttpServerPropertiesManager::Clear() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   http_server_properties_impl_->Clear();
-  ScheduleUpdateSpdyPrefsOnIO();
-  ScheduleUpdateAlternateProtocolPrefsOnIO();
+  ScheduleUpdatePrefsOnIO();
 }
 
 bool HttpServerPropertiesManager::SupportsSpdy(
     const net::HostPortPair& server) const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return http_server_properties_impl_->SupportsSpdy(server);
 }
 
 void HttpServerPropertiesManager::SetSupportsSpdy(
     const net::HostPortPair& server,
     bool support_spdy) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   http_server_properties_impl_->SetSupportsSpdy(server, support_spdy);
-  ScheduleUpdateSpdyPrefsOnIO();
+  ScheduleUpdatePrefsOnIO();
 }
 
 bool HttpServerPropertiesManager::HasAlternateProtocol(
     const net::HostPortPair& server) const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return http_server_properties_impl_->HasAlternateProtocol(server);
 }
 
 net::PortAlternateProtocolPair
 HttpServerPropertiesManager::GetAlternateProtocol(
     const net::HostPortPair& server) const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return http_server_properties_impl_->GetAlternateProtocol(server);
 }
 
 void HttpServerPropertiesManager::SetAlternateProtocol(
     const net::HostPortPair& server,
     uint16 alternate_port,
     net::AlternateProtocol alternate_protocol) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   http_server_properties_impl_->SetAlternateProtocol(
       server, alternate_port, alternate_protocol);
-  ScheduleUpdateAlternateProtocolPrefsOnIO();
+  ScheduleUpdatePrefsOnIO();
 }
 
 void HttpServerPropertiesManager::SetBrokenAlternateProtocol(
     const net::HostPortPair& server) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   http_server_properties_impl_->SetBrokenAlternateProtocol(server);
-  ScheduleUpdateAlternateProtocolPrefsOnIO();
+  ScheduleUpdatePrefsOnIO();
 }
 
 const net::AlternateProtocolMap&
 HttpServerPropertiesManager::alternate_protocol_map() const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return http_server_properties_impl_->alternate_protocol_map();
 }
 
-//
-// Update spdy_servers (the cached data) with data from preferences.
-//
-void HttpServerPropertiesManager::ScheduleUpdateSpdyCacheOnUI() {
+const spdy::SpdySettings&
+HttpServerPropertiesManager::GetSpdySettings(
+    const net::HostPortPair& host_port_pair) const {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  return http_server_properties_impl_->GetSpdySettings(host_port_pair);
+}
+
+// Saves settings for a host.
+bool HttpServerPropertiesManager::SetSpdySettings(
+    const net::HostPortPair& host_port_pair,
+    const spdy::SpdySettings& settings) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  bool persist = http_server_properties_impl_->SetSpdySettings(
+      host_port_pair, settings);
+  if (persist)
+    ScheduleUpdatePrefsOnIO();
+  return persist;
+}
+
+void HttpServerPropertiesManager::ClearSpdySettings() {
+  http_server_properties_impl_->ClearSpdySettings();
+  ScheduleUpdatePrefsOnIO();
+}
+
+const net::SpdySettingsMap&
+HttpServerPropertiesManager::spdy_settings_map() const {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  return http_server_properties_impl_->spdy_settings_map();
+}
+
+//
+// Update the HttpServerPropertiesImpl's cache with data from preferences.
+//
+void HttpServerPropertiesManager::ScheduleUpdateCacheOnUI() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   // Cancel pending updates, if any.
-  ui_spdy_cache_update_timer_->Stop();
-  StartSpdyCacheUpdateTimerOnUI(
+  ui_cache_update_timer_->Stop();
+  StartCacheUpdateTimerOnUI(
       base::TimeDelta::FromMilliseconds(kUpdateCacheDelayMs));
 }
 
-void HttpServerPropertiesManager::UpdateSpdyCacheFromPrefs() {
+void HttpServerPropertiesManager::StartCacheUpdateTimerOnUI(
+    base::TimeDelta delay) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  if (!pref_service_->HasPrefPath(prefs::kSpdyServers))
+  ui_cache_update_timer_->Start(
+      FROM_HERE, delay, this,
+      &HttpServerPropertiesManager::UpdateCacheFromPrefsOnUI);
+}
+
+void HttpServerPropertiesManager::UpdateCacheFromPrefsOnUI() {
+  // The preferences can only be read on the UI thread.
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  if (!pref_service_->HasPrefPath(prefs::kHttpServerProperties))
     return;
 
-  // The preferences can only be read on the UI thread.
-  StringVector* spdy_servers =
-      ListValueToStringVector(pref_service_->GetList(prefs::kSpdyServers));
-
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&HttpServerPropertiesManager::UpdateSpdyCacheFromPrefsOnIO,
-                 base::Unretained(this), spdy_servers, true));
-}
-
-void HttpServerPropertiesManager::UpdateSpdyCacheFromPrefsOnIO(
-    StringVector* spdy_servers,
-    bool support_spdy) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  // Preferences have the master data because admins might have pushed new
-  // preferences. Clear the cached data and use the new spdy server list from
-  // preferences.
-  scoped_ptr<StringVector> scoped_spdy_servers(spdy_servers);
-  http_server_properties_impl_->InitializeSpdyServers(spdy_servers,
-                                                      support_spdy);
-}
-
-//
-// Update Preferences with data from spdy_servers (the cached data).
-//
-void HttpServerPropertiesManager::ScheduleUpdateSpdyPrefsOnIO() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  // Cancel pending updates, if any.
-  io_spdy_prefs_update_timer_->Stop();
-  StartSpdyPrefsUpdateTimerOnIO(
-      base::TimeDelta::FromMilliseconds(kUpdatePrefsDelayMs));
-}
-
-void HttpServerPropertiesManager::UpdateSpdyPrefsFromCache() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  scoped_refptr<RefCountedListValue> spdy_server_list =
-      new RefCountedListValue();
-  http_server_properties_impl_->GetSpdyServerList(&spdy_server_list->data);
-
-  // Update the preferences on the UI thread.
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&HttpServerPropertiesManager::SetSpdyServersInPrefsOnUI,
-                 ui_weak_ptr_, spdy_server_list));
-}
-
-void HttpServerPropertiesManager::SetSpdyServersInPrefsOnUI(
-    scoped_refptr<RefCountedListValue> spdy_server_list) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  setting_spdy_servers_ = true;
-  pref_service_->Set(prefs::kSpdyServers, spdy_server_list->data);
-  setting_spdy_servers_ = false;
-}
-
-void HttpServerPropertiesManager::ScheduleUpdateAlternateProtocolCacheOnUI() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  // Cancel pending updates, if any.
-  ui_alternate_protocol_cache_update_timer_->Stop();
-  StartAlternateProtocolCacheUpdateTimerOnUI(
-      base::TimeDelta::FromMilliseconds(kUpdateCacheDelayMs));
-}
-
-void HttpServerPropertiesManager::UpdateAlternateProtocolCacheFromPrefs() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  if (!pref_service_->HasPrefPath(prefs::kAlternateProtocolServers))
-    return;
+  // String is host/port pair of spdy server.
+  StringVector* spdy_servers = new StringVector;
+
+  // Parse the preferences into a SpdySettingsMap.
+  net::SpdySettingsMap spdy_settings_map;
 
   // Parse the preferences into a AlternateProtocolMap.
   net::AlternateProtocolMap alternate_protocol_map;
-  const base::DictionaryValue& alternate_protocol_servers =
-      *pref_service_->GetDictionary(prefs::kAlternateProtocolServers);
+
+  const base::DictionaryValue& http_server_properties_dict =
+      *pref_service_->GetDictionary(prefs::kHttpServerProperties);
   for (base::DictionaryValue::key_iterator it =
-       alternate_protocol_servers.begin_keys();
-       it != alternate_protocol_servers.end_keys(); ++it) {
+       http_server_properties_dict.begin_keys();
+       it != http_server_properties_dict.end_keys(); ++it) {
+    // Get server's host/pair.
     const std::string& server_str = *it;
     net::HostPortPair server = net::HostPortPair::FromString(server_str);
     if (server.host().empty()) {
-      VLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
+      VLOG(1) << "Malformed http_server_properties for server: " << server_str;
       NOTREACHED();
       continue;
     }
-    DCHECK(!ContainsKey(alternate_protocol_map, server));
-
-    base::DictionaryValue* port_alternate_protocol_dict = NULL;
-    if (!alternate_protocol_servers.GetDictionaryWithoutPathExpansion(
-        server_str, &port_alternate_protocol_dict)) {
-      VLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
+
+    base::DictionaryValue* server_pref_dict = NULL;
+    if (!http_server_properties_dict.GetDictionaryWithoutPathExpansion(
+        server_str, &server_pref_dict)) {
+      VLOG(1) << "Malformed http_server_properties server: " << server_str;
       NOTREACHED();
       continue;
     }
 
-    int port = 0;
-    if (!port_alternate_protocol_dict->GetIntegerWithoutPathExpansion(
-        "port", &port) || (port > (1 << 16))) {
-      VLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
-      NOTREACHED();
+    // Get if server supports Spdy.
+    bool supports_spdy = false;
+    if ((server_pref_dict->GetBoolean(
+         "supports_spdy", &supports_spdy)) && supports_spdy) {
+      spdy_servers->push_back(server_str);
+    }
+
+    // Get SpdySettings.
+    DCHECK(!ContainsKey(spdy_settings_map, server));
+    base::ListValue* spdy_settings_list = NULL;
+    if (server_pref_dict->GetListWithoutPathExpansion(
+        "settings", &spdy_settings_list)) {
+      spdy::SpdySettings spdy_settings;
+
+      for (base::ListValue::const_iterator list_it =
+           spdy_settings_list->begin();
+           list_it != spdy_settings_list->end(); ++list_it) {
+        if ((*list_it)->GetType() != Value::TYPE_DICTIONARY) {
+          VLOG(1) << "Malformed SpdySettingsList for server: " << server_str;
+          NOTREACHED();
+          continue;
+        }
+
+        const base::DictionaryValue* spdy_setting_dict =
+            static_cast<const base::DictionaryValue*>(*list_it);
+
+        int id = 0;
+        if (!spdy_setting_dict->GetIntegerWithoutPathExpansion("id", &id)) {
+          VLOG(1) << "Malformed id in SpdySettings for server: " << server_str;
+          NOTREACHED();
+          continue;
+        }
+
+        int value = 0;
+        if (!spdy_setting_dict->GetIntegerWithoutPathExpansion("value",
+                                                               &value)) {
+          VLOG(1) << "Malformed value in SpdySettings for server: " <<
+              server_str;
+          NOTREACHED();
+          continue;
+        }
+
+        spdy::SettingsFlagsAndId flags_and_id(0);
+        flags_and_id.set_id(id);
+        flags_and_id.set_flags(spdy::SETTINGS_FLAG_PERSISTED);
+
+        spdy_settings.push_back(spdy::SpdySetting(flags_and_id, value));
+      }
+
+      spdy_settings_map[server] = spdy_settings;
+    }
+
+    // Get alternate_protocol server.
+    DCHECK(!ContainsKey(alternate_protocol_map, server));
+    base::DictionaryValue* port_alternate_protocol_dict = NULL;
+    if (!server_pref_dict->GetDictionaryWithoutPathExpansion(
+        "alternate_protocol", &port_alternate_protocol_dict)) {
       continue;
     }
-    int protocol = 0;
-    if (!port_alternate_protocol_dict->GetIntegerWithoutPathExpansion(
-        "protocol", &protocol) || (protocol < 0) ||
-        (protocol > net::NUM_ALTERNATE_PROTOCOLS)) {
-      VLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
-      NOTREACHED();
-      continue;
-    }
-
-    net::PortAlternateProtocolPair port_alternate_protocol;
-    port_alternate_protocol.port = port;
-    port_alternate_protocol.protocol = static_cast<net::AlternateProtocol>(
-        protocol);
-
-    alternate_protocol_map[server] = port_alternate_protocol;
+
+    do {
+      int port = 0;
+      if (!port_alternate_protocol_dict->GetIntegerWithoutPathExpansion(
+          "port", &port) || (port > (1 << 16))) {
+        VLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
+        NOTREACHED();
+        continue;
+      }
+      int protocol = 0;
+      if (!port_alternate_protocol_dict->GetIntegerWithoutPathExpansion(
+          "protocol", &protocol) || (protocol < 0) ||
+          (protocol > net::NUM_ALTERNATE_PROTOCOLS)) {
+        VLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
+        NOTREACHED();
+        continue;
+      }
+
+      net::PortAlternateProtocolPair port_alternate_protocol;
+      port_alternate_protocol.port = port;
+      port_alternate_protocol.protocol = static_cast<net::AlternateProtocol>(
+          protocol);
+
+      alternate_protocol_map[server] = port_alternate_protocol;
+    } while (false);
   }
 
   scoped_refptr<RefCountedAlternateProtocolMap> alternate_protocol_map_arg =
       new RefCountedAlternateProtocolMap;
   alternate_protocol_map_arg->data.swap(alternate_protocol_map);
 
+  scoped_refptr<RefCountedSpdySettingsMap> spdy_settings_map_arg =
+      new RefCountedSpdySettingsMap;
+  spdy_settings_map_arg->data.swap(spdy_settings_map);
+
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&HttpServerPropertiesManager::
-                 UpdateAlternateProtocolCacheFromPrefsOnIO,
-                 base::Unretained(this), alternate_protocol_map_arg));
-}
-
-void HttpServerPropertiesManager::UpdateAlternateProtocolCacheFromPrefsOnIO(
-      RefCountedAlternateProtocolMap* alternate_protocol_map) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+                 UpdateCacheFromPrefsOnIO,
+                 base::Unretained(this),
+                 spdy_servers,
+                 spdy_settings_map_arg,
+                 alternate_protocol_map_arg));
+}
+
+void HttpServerPropertiesManager::UpdateCacheFromPrefsOnIO(
+    StringVector* spdy_servers,
+    RefCountedSpdySettingsMap* spdy_settings_map,
+    RefCountedAlternateProtocolMap* alternate_protocol_map) {
   // Preferences have the master data because admins might have pushed new
-  // preferences. Clear the cached data and use the new spdy server list from
+  // preferences. Update the cached data with new data from preferences.
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  // Clear the cached data and use the new spdy_servers list from preferences.
+  scoped_ptr<StringVector> scoped_spdy_servers(spdy_servers);
+  http_server_properties_impl_->InitializeSpdyServers(spdy_servers, true);
+
+  // Clear the cached data and use the new spdy_settings from preferences.
+  http_server_properties_impl_->InitializeSpdySettingsServers(
+      &spdy_settings_map->data);
+
+  // Clear the cached data and use the new Alternate-Protocol server list from
   // preferences.
   http_server_properties_impl_->InitializeAlternateProtocolServers(
       &alternate_protocol_map->data);
 }
 
-//
-// Update Preferences with data from alternate_protocol_servers (the cached
-// data).
-//
-void HttpServerPropertiesManager::ScheduleUpdateAlternateProtocolPrefsOnIO() {
+
+//
+// Update Preferences with data from the cached data.
+//
+void HttpServerPropertiesManager::ScheduleUpdatePrefsOnIO() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   // Cancel pending updates, if any.
-  io_alternate_protocol_prefs_update_timer_->Stop();
-  StartAlternateProtocolPrefsUpdateTimerOnIO(
+  io_spdy_prefs_update_timer_->Stop();
+  StartPrefsUpdateTimerOnIO(
       base::TimeDelta::FromMilliseconds(kUpdatePrefsDelayMs));
 }
 
-void HttpServerPropertiesManager::UpdateAlternateProtocolPrefsFromCache() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+void HttpServerPropertiesManager::StartPrefsUpdateTimerOnIO(
+    base::TimeDelta delay) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  // This is overridden in tests to post the task without the delay.
+  io_spdy_prefs_update_timer_->Start(
+      FROM_HERE, delay, this,
+      &HttpServerPropertiesManager::UpdatePrefsFromCacheOnIO);
+}
+
+void HttpServerPropertiesManager::UpdatePrefsFromCacheOnIO() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  scoped_refptr<RefCountedListValue> spdy_server_list =
+      new RefCountedListValue();
+  http_server_properties_impl_->GetSpdyServerList(&spdy_server_list->data);
+
+  scoped_refptr<RefCountedSpdySettingsMap> spdy_settings_map =
+      new RefCountedSpdySettingsMap;
+  spdy_settings_map->data =
+      http_server_properties_impl_->spdy_settings_map();
 
   scoped_refptr<RefCountedAlternateProtocolMap> alternate_protocol_map =
       new RefCountedAlternateProtocolMap;
   alternate_protocol_map->data =
       http_server_properties_impl_->alternate_protocol_map();
 
   // Update the preferences on the UI thread.
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
-      base::Bind(&HttpServerPropertiesManager::
-                 SetAlternateProtocolServersInPrefsOnUI,
-                 ui_weak_ptr_, alternate_protocol_map));
+      base::Bind(&HttpServerPropertiesManager::UpdatePrefsOnUI,
+                 ui_weak_ptr_, spdy_server_list, spdy_settings_map,
+                 alternate_protocol_map));
 }
 
-void HttpServerPropertiesManager::SetAlternateProtocolServersInPrefsOnUI(
+// A local or temporary data structure to hold supports_spdy, SpdySettings and
+// PortAlternateProtocolPair preferences for a server. This is used only in
+// UpdatePrefsOnUI.
+struct ServerPref {
+  ServerPref()
+      : supports_spdy(false),
+        settings(NULL),
+        alternate_protocol(NULL) {
+  }
+  ServerPref(bool supports_spdy,
+             const spdy::SpdySettings* settings,
+             const net::PortAlternateProtocolPair* alternate_protocol)
+      : supports_spdy(supports_spdy),
+        settings(settings),
+        alternate_protocol(alternate_protocol) {
+  }
+  bool supports_spdy;
+  const spdy::SpdySettings* settings;
+  const net::PortAlternateProtocolPair* alternate_protocol;
+};
+
+void HttpServerPropertiesManager::UpdatePrefsOnUI(
+    scoped_refptr<RefCountedListValue> spdy_server_list,
+    RefCountedSpdySettingsMap* spdy_settings_map,
     RefCountedAlternateProtocolMap* alternate_protocol_map) {
+
+  typedef std::map<net::HostPortPair, ServerPref> ServerPrefMap;
+  ServerPrefMap server_pref_map;
+
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  base::DictionaryValue alternate_protocol_dict;
-  for (net::AlternateProtocolMap::const_iterator it =
+
+  // Add servers that support spdy to server_pref_map.
+  std::string s;
+  for (base::ListValue::const_iterator list_it = spdy_server_list->data.begin();
+       list_it != spdy_server_list->data.end(); ++list_it) {
+    if ((*list_it)->GetAsString(&s)) {
+      net::HostPortPair server = net::HostPortPair::FromString(s);
+
+      ServerPrefMap::iterator it = server_pref_map.find(server);
+      if (it == server_pref_map.end()) {
+        ServerPref server_pref(true, NULL, NULL);
+        server_pref_map[server] = server_pref;
+      } else {
+        it->second.supports_spdy = true;
+      }
+    }
+  }
+
+  // Add servers that have SpdySettings to server_pref_map.
+  for (net::SpdySettingsMap::iterator map_it =
+       spdy_settings_map->data.begin();
+       map_it != spdy_settings_map->data.end(); ++map_it) {
+    const net::HostPortPair& server = map_it->first;
+
+    ServerPrefMap::iterator it = server_pref_map.find(server);
+    if (it == server_pref_map.end()) {
+      ServerPref server_pref(false, &map_it->second, NULL);
+      server_pref_map[server] = server_pref;
+    } else {
+      it->second.settings = &map_it->second;
+    }
+  }
+
+  // Add AlternateProtocol servers to server_pref_map.
+  for (net::AlternateProtocolMap::const_iterator map_it =
        alternate_protocol_map->data.begin();
-       it != alternate_protocol_map->data.end(); ++it) {
-    const net::HostPortPair& server = it->first;
+       map_it != alternate_protocol_map->data.end(); ++map_it) {
+    const net::HostPortPair& server = map_it->first;
     const net::PortAlternateProtocolPair& port_alternate_protocol =
-        it->second;
+        map_it->second;
     if (port_alternate_protocol.protocol < 0 ||
         port_alternate_protocol.protocol >= net::NUM_ALTERNATE_PROTOCOLS) {
       continue;
     }
-    base::DictionaryValue* port_alternate_protocol_dict =
-        new base::DictionaryValue;
-    port_alternate_protocol_dict->SetInteger(
-        "port", port_alternate_protocol.port);
-    port_alternate_protocol_dict->SetInteger(
-        "protocol", port_alternate_protocol.protocol);
-    alternate_protocol_dict.SetWithoutPathExpansion(
-        server.ToString(), port_alternate_protocol_dict);
+
+    ServerPrefMap::iterator it = server_pref_map.find(server);
+    if (it == server_pref_map.end()) {
+      ServerPref server_pref(false, NULL, &map_it->second);
+      server_pref_map[server] = server_pref;
+    } else {
+      it->second.alternate_protocol = &map_it->second;
+    }
   }
-  setting_alternate_protocol_servers_ = true;
-  pref_service_->Set(prefs::kAlternateProtocolServers,
-                     alternate_protocol_dict);
-  setting_alternate_protocol_servers_ = false;
-}
 
-void HttpServerPropertiesManager::StartSpdyCacheUpdateTimerOnUI(
-    base::TimeDelta delay) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  ui_spdy_cache_update_timer_->Start(
-      FROM_HERE, delay, this,
-      &HttpServerPropertiesManager::UpdateSpdyCacheFromPrefs);
-}
+  // Persist the prefs::kHttpServerProperties.
+  base::DictionaryValue http_server_properties_dict;
+  for (ServerPrefMap::const_iterator map_it =
+       server_pref_map.begin();
+       map_it != server_pref_map.end(); ++map_it) {
+    const net::HostPortPair& server = map_it->first;
+    const ServerPref& server_pref = map_it->second;
 
-void HttpServerPropertiesManager::StartSpdyPrefsUpdateTimerOnIO(
-    base::TimeDelta delay) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  // This is overridden in tests to post the task without the delay.
-  io_spdy_prefs_update_timer_->Start(
-      FROM_HERE, delay, this,
-      &HttpServerPropertiesManager::UpdateSpdyPrefsFromCache);
-}
+    base::DictionaryValue* server_pref_dict = new base::DictionaryValue;
 
-void HttpServerPropertiesManager::StartAlternateProtocolCacheUpdateTimerOnUI(
-    base::TimeDelta delay) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  ui_alternate_protocol_cache_update_timer_->Start(
-      FROM_HERE, delay, this,
-      &HttpServerPropertiesManager::UpdateAlternateProtocolCacheFromPrefs);
-}
+    // Save supports_spdy.
+    server_pref_dict->SetBoolean("supports_spdy", server_pref.supports_spdy);
 
-void HttpServerPropertiesManager::StartAlternateProtocolPrefsUpdateTimerOnIO(
-    base::TimeDelta delay) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  // This is overridden in tests to post the task without the delay.
-  io_alternate_protocol_prefs_update_timer_->Start(
-      FROM_HERE, delay, this,
-      &HttpServerPropertiesManager::UpdateAlternateProtocolPrefsFromCache);
+    // Save SpdySettings.
+    if (server_pref.settings) {
+      base::ListValue* spdy_settings_list = new ListValue();
+      for (spdy::SpdySettings::const_iterator it =
+           server_pref.settings->begin();
+           it != server_pref.settings->end(); ++it) {
+        uint32 id = it->first.id();
+        uint32 value = it->second;
+        base::DictionaryValue* spdy_setting_dict = new base::DictionaryValue;
+        spdy_setting_dict->SetInteger("id", id);
+        spdy_setting_dict->SetInteger("value", value);
+        spdy_settings_list->Append(spdy_setting_dict);
+      }
+      server_pref_dict->Set("settings", spdy_settings_list);
+    }
+
+    // Save alternate_protocol.
+    if (server_pref.alternate_protocol) {
+      base::DictionaryValue* port_alternate_protocol_dict =
+          new base::DictionaryValue;
+      const net::PortAlternateProtocolPair* port_alternate_protocol =
+          server_pref.alternate_protocol;
+      port_alternate_protocol_dict->SetInteger(
+          "port", port_alternate_protocol->port);
+      port_alternate_protocol_dict->SetInteger(
+          "protocol", port_alternate_protocol->protocol);
+      server_pref_dict->SetWithoutPathExpansion(
+          "alternate_protocol", port_alternate_protocol_dict);
+    }
+    http_server_properties_dict.SetWithoutPathExpansion(
+          server.ToString(), server_pref_dict);
+  }
+
+  setting_prefs_ = true;
+  pref_service_->Set(prefs::kHttpServerProperties,
+                     http_server_properties_dict);
+  setting_prefs_ = false;
 }
 
 void HttpServerPropertiesManager::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(type == chrome::NOTIFICATION_PREF_CHANGED);
   PrefService* prefs = content::Source<PrefService>(source).ptr();
   DCHECK(prefs == pref_service_);
   std::string* pref_name = content::Details<std::string>(details).ptr();
-  if (*pref_name == prefs::kSpdyServers) {
-    if (!setting_spdy_servers_)
-      ScheduleUpdateSpdyCacheOnUI();
-  } else if (*pref_name == prefs::kAlternateProtocolServers) {
-    if (!setting_alternate_protocol_servers_)
-      ScheduleUpdateAlternateProtocolCacheOnUI();
+  if (*pref_name == prefs::kHttpServerProperties) {
+    if (!setting_prefs_)
+      ScheduleUpdateCacheOnUI();
   } else {
     NOTREACHED();
   }
 }
 
 }  // namespace chrome_browser_net