Implement origin-based deletion of plugin data

chrome/browser/browsing_data/registrable_domain_filter_builder.cc

 // Copyright 2016 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/browsing_data/registrable_domain_filter_builder.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 89 matching lines @@
 base::Callback<bool(const std::string& cookie)>
 RegistrableDomainFilterBuilder::BuildChannelIDFilter() const {
   std::set<std::string>* domains_and_ips =
       new std::set<std::string>(domain_list_);
   return base::Bind(
       &RegistrableDomainFilterBuilder
           ::MatchesChannelIDForRegisterableDomainsAndIPs,
       base::Owned(domains_and_ips), mode());
 }
 
+base::Callback<bool(const std::string& site)>
+RegistrableDomainFilterBuilder::BuildPluginFilter() const {
+  std::set<std::string>* domains_and_ips =
+      new std::set<std::string>(domain_list_);
+  return base::Bind(
+      &RegistrableDomainFilterBuilder
+          ::MatchesPluginSiteForRegisterableDomainsAndIPs,
+      base::Owned(domains_and_ips), mode());
+}
+
 bool RegistrableDomainFilterBuilder::operator==(
     const RegistrableDomainFilterBuilder& other) const {
   return domain_list_ == other.domain_list_ && mode() == other.mode();
 }
 
 bool RegistrableDomainFilterBuilder::IsEmpty() const {
   return domain_list_.empty();
 }
 
 // static
@@ skipping 45 matching lines @@
 
 // static
 bool
 RegistrableDomainFilterBuilder::MatchesChannelIDForRegisterableDomainsAndIPs(
     std::set<std::string>* domains_and_ips,
     Mode mode,
     const std::string& channel_id_server_id) {
   return ((mode == WHITELIST) == (domains_and_ips->find(channel_id_server_id) !=
                                   domains_and_ips->end()));
 }
+
+// static
+bool
+RegistrableDomainFilterBuilder::MatchesPluginSiteForRegisterableDomainsAndIPs(
+    std::set<std::string>* domains_and_ips,
+    Mode mode,
+    const std::string& site) {
+  // If |site| is a third- or lower-level domain, find the corresponding eTLD+1.
+  std::string domain_or_ip =
+      GetDomainAndRegistry(site, INCLUDE_PRIVATE_REGISTRIES);
+  if (domain_or_ip.empty())
+    domain_or_ip = site;
+
+  return ((mode == WHITELIST) == (domains_and_ips->find(domain_or_ip) !=
+                                  domains_and_ips->end()));
+}