Added SchemaMap::GetChanges().

chrome/browser/policy/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 "chrome/browser/policy/schema_map.h"
 
 #include "base/values.h"
 #include "chrome/browser/policy/policy_bundle.h"
 #include "chrome/browser/policy/policy_map.h"
 
@@ skipping 62 matching lines @@
   for (DomainMap::const_iterator domain = map_.begin();
        domain != map_.end(); ++domain) {
     if (domain->first == POLICY_DOMAIN_CHROME)
       continue;
     if (!domain->second.empty())
       return true;
   }
   return false;
 }
 
+void SchemaMap::GetChanges(const scoped_refptr<SchemaMap>& older,
+                           PolicyNamespaceList* removed,
+                           PolicyNamespaceList* added) const {
+  GetNamespacesNotInOther(older, added);
+  older->GetNamespacesNotInOther(this, removed);
+}
+
+void SchemaMap::GetNamespacesNotInOther(const SchemaMap* other,
+                                        PolicyNamespaceList* list) const {
+  list->clear();
+  for (DomainMap::const_iterator domain = map_.begin();
+       domain != map_.end(); ++domain) {
+    const ComponentMap& components = domain->second;
+    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