policy: load JSON schema into domain descriptor at start time.

chrome/browser/policy/policy_domain_descriptor.cc

 // Copyright (c) 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 "chrome/browser/policy/policy_domain_descriptor.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 #include "chrome/browser/policy/policy_bundle.h"
@@ skipping 39 matching lines @@
 
 void PolicyDomainDescriptor::RegisterComponent(
     const std::string& component_id,
     scoped_ptr<PolicySchema> schema) {
   const PolicySchema*& entry = schema_map_[component_id];
   delete entry;
   entry = schema.release();
 }
 
 void PolicyDomainDescriptor::FilterBundle(PolicyBundle* bundle) const {
-  // Chrome policies are not filtered, so that typos appear in about:policy.
-  DCHECK_NE(POLICY_DOMAIN_CHROME, domain_);
-
   for (PolicyBundle::iterator it_bundle = bundle->begin();
        it_bundle != bundle->end(); ++it_bundle) {
     const PolicyNamespace& ns = it_bundle->first;
     if (ns.domain != domain_)
       continue;
 
     SchemaMap::const_iterator it_schema = schema_map_.find(ns.component_id);
     if (it_schema == schema_map_.end()) {
       // Component ID not found.
       it_bundle->second->Clear();
@@ skipping 20 matching lines @@
         map->Erase(policy_name);
     }
   }
 }
 
 PolicyDomainDescriptor::~PolicyDomainDescriptor() {
   STLDeleteValues(&schema_map_);
 }
 
 }  // namespace policy