Deprecate direct use of legacy extension management preference

chrome/browser/extensions/extension_management.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_management.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/extensions/external_policy_loader.h"
 #include "chrome/browser/extensions/external_provider_impl.h"
 #include "chrome/browser/extensions/standard_management_policy_provider.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/crx_file/id_util.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "extensions/browser/pref_names.h"
 #include "extensions/common/url_pattern.h"
+#include "url/gurl.h"
 
 namespace extensions {
 
 void ExtensionManagement::IndividualSettings::Reset() {
   installation_mode = ExtensionManagement::INSTALLATION_ALLOWED;
   update_url.clear();
 }
 
 ExtensionManagement::GlobalSettings::GlobalSettings() {
   Reset();
@@ skipping 57 matching lines @@
           forcelist.get(), it->first, it->second.update_url);
     }
   }
   return forcelist.Pass();
 }
 
 bool ExtensionManagement::IsInstallationAllowed(const ExtensionId& id) const {
   return ReadById(id).installation_mode != INSTALLATION_BLOCKED;
 }
 
+bool ExtensionManagement::IsOffstoreInstallAllowed(const GURL& url,
+                                                   const GURL& referrer_url) {
+  // No allowed install sites specified, disallow by default.
+  if (!global_settings_.has_restricted_install_sources)
+    return false;
+
+  const extensions::URLPatternSet& url_patterns =
+      global_settings_.install_sources;
+
+  if (!url_patterns.MatchesURL(url))
+    return false;
+
+  // The referrer URL must also be whitelisted, unless the URL has the file
+  // scheme (there's no referrer for those URLs).
+  return url.SchemeIsFile() || url_patterns.MatchesURL(referrer_url);
+}
+
 const ExtensionManagement::IndividualSettings& ExtensionManagement::ReadById(
     const ExtensionId& id) const {
   DCHECK(crx_file::id_util::IdIsValid(id)) << "Invalid ID: " << id;
   SettingsIdMap::const_iterator it = settings_by_id_.find(id);
   if (it != settings_by_id_.end())
     return it->second;
   return default_settings_;
 }
 
 const ExtensionManagement::GlobalSettings&
@@ skipping 162 matching lines @@
   return new ExtensionManagement(
       Profile::FromBrowserContext(context)->GetPrefs());
 }
 
 content::BrowserContext* ExtensionManagementFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }
 
 }  // namespace extensions