Added a PolicyDomainDescriptor.

chrome/browser/policy/async_policy_loader.cc

Index: chrome/browser/policy/async_policy_loader.cc
diff --git a/chrome/browser/policy/async_policy_loader.cc b/chrome/browser/policy/async_policy_loader.cc
index 13e23e2d19b96b30e83fb08f2828cf5ef133c891..f7357b076f0c10466ac2fa9acd6bc4557620e746 100644
--- a/chrome/browser/policy/async_policy_loader.cc
+++ b/chrome/browser/policy/async_policy_loader.cc
@@ -55,10 +55,24 @@ void AsyncPolicyLoader::Reload(bool force) {
     return;
   }
 
+  // Filter out mismatching policies.
+  for (DescriptorMap::iterator it = descriptor_map_.begin();
+       it != descriptor_map_.end(); ++it) {
+    it->second->FilterBundle(bundle.get());

[Mattias Nissler (ping if slow), 2013/05/15 10:24:06]

I don't think this is a good idea - the idea was that chrome://policy does show
misconfigured policy. I guess a better point for filtering would be at the
PolicyService or ConfigurationPolicyPrefStore level.

[Joao da Silva, 2013/05/19 13:17:55]

Note that this only applies to non-CHROME policy, so typos will still show up.

Typos for non-CHROME policy are trickier to find, since the loaders use the
schema information to determine which names to lookup. That will be figured out
in future work, since about:policy doesn't show extension policy for now.

+  }
+
   update_callback_.Run(bundle.Pass());
   ScheduleNextReload(TimeDelta::FromSeconds(kReloadIntervalSeconds));
 }
 
+void AsyncPolicyLoader::RegisterPolicyDomain(
+    scoped_refptr<const PolicyDomainDescriptor> descriptor) {
+  if (descriptor->domain() != POLICY_DOMAIN_CHROME) {
+    descriptor_map_[descriptor->domain()] = descriptor;
+    Reload(true);
+  }
+}
+
 scoped_ptr<PolicyBundle> AsyncPolicyLoader::InitialLoad() {
   // This is the first load, early during startup. Use this to record the
   // initial |last_modification_time_|, so that potential changes made before