diff options
Diffstat (limited to 'chrome/browser/net/dns_global.cc')
| -rw-r--r-- | chrome/browser/net/dns_global.cc | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/chrome/browser/net/dns_global.cc b/chrome/browser/net/dns_global.cc index b34de8a..67e4265 100644 --- a/chrome/browser/net/dns_global.cc +++ b/chrome/browser/net/dns_global.cc @@ -60,6 +60,7 @@ void OnTheRecord(bool enable) { void RegisterPrefs(PrefService* local_state) { local_state->RegisterListPref(prefs::kDnsStartupPrefetchList); + local_state->RegisterListPref(prefs::kDnsHostReferralList); } void RegisterUserPrefs(PrefService* user_prefs) { @@ -73,8 +74,7 @@ static DnsMaster* dns_master; // This API is only used in the browser process. // It is called from an IPC message originating in the renderer. It currently // includes both Page-Scan, and Link-Hover prefetching. -// TODO(jar): Separate out link-hover prefetching, and histogram results -// separately. +// TODO(jar): Separate out link-hover prefetching, and page-scan results. void DnsPrefetchList(const NameList& hostnames) { DnsPrefetchMotivatedList(hostnames, DnsHostInfo::PAGE_SCAN_MOTIVATED); } @@ -221,7 +221,7 @@ void PrefetchObserver::OnFinishResolutionWithStatus(bool was_resolved, return; // TODO(jar): Don't add host to our list if it is a non-linked lookup, and // instead rely on Referrers to pull this in automatically with the enclosing - // page load. + // page load (once we start to persist elements of our referrer tree). StartupListAppend(navigation_info); } @@ -466,6 +466,32 @@ void DnsPrefetchHostNamesAtStartup(PrefService* user_prefs, DnsHostInfo::STARTUP_LIST_MOTIVATED); } +//------------------------------------------------------------------------------ +// Functions to persist and restore host references, that are used to direct DNS +// prefetch of names (probably) used in subresources when the major resource is +// navigated towards. + +void SaveSubresourceReferrers(PrefService* local_state) { + if (NULL == dns_master) + return; + ListValue* referral_list = + local_state->GetMutableList(prefs::kDnsHostReferralList); + dns_master->SerializeReferrers(referral_list); +} + +void RestoreSubresourceReferrers(PrefService* local_state) { + if (NULL == dns_master) + return; + ListValue* referral_list = + local_state->GetMutableList(prefs::kDnsHostReferralList); + dns_master->DeserializeReferrers(*referral_list); +} + +void TrimSubresourceReferrers() { + if (NULL == dns_master) + return; + dns_master->TrimReferrers(); +} } // namespace chrome_browser_net |