Precache policy-for-extensions for device-local accounts.

components/policy/core/common/schema_map.cc

 // Copyright 2013 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 "components/policy/core/common/schema_map.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "components/policy/core/common/policy_bundle.h"
 #include "components/policy/core/common/policy_map.h"
@@ skipping 36 matching lines @@
 
     if (!schema) {
       it->second->Clear();
       continue;
     }
 
     // TODO(joaodasilva): if a component is registered but doesn't have a schema
     // then its policies aren't filtered. This behavior is enabled to allow a
     // graceful update of the Legacy Browser Support extension; it'll be removed
     // in a future release. http://crbug.com/240704
-    if (!schema->valid())
+    static const char kLegacyBrowserSupportExtensionId[] =
+        "heildphpnddilhkemkielfhnkaagiabh";
+    if (it->first.domain == POLICY_DOMAIN_EXTENSIONS &&
+        it->first.component_id == kLegacyBrowserSupportExtensionId) {
       continue;
+    }
+
+    if (!schema->valid()) {
+      // Don't serve unknown policies.
+      it->second->Clear();
+      continue;
+    }
 
     PolicyMap* map = it->second;
     for (PolicyMap::const_iterator it_map = map->begin();
          it_map != map->end();) {
       const std::string& policy_name = it_map->first;
       const base::Value* policy_value = it_map->second.value;
       Schema policy_schema = schema->GetProperty(policy_name);
       ++it_map;
       std::string error_path;
       std::string error;
@@ skipping 39 matching lines @@
     for (ComponentMap::const_iterator comp = components.begin();
          comp != components.end(); ++comp) {
       PolicyNamespace ns(domain->first, comp->first);
       if (!other->GetSchema(ns))
         list->push_back(ns);
     }
   }
 }
 
 }  // namespace policy