Add ManagedModePolicyProvider and extension API to get and set policies.

chrome/browser/policy/browser_policy_connector.cc

Index: chrome/browser/policy/browser_policy_connector.cc
diff --git a/chrome/browser/policy/browser_policy_connector.cc b/chrome/browser/policy/browser_policy_connector.cc
index f6e1a1c620a833dd93013105d914e38e4817cb74..45a3a12c1ac53e53bcf539a6146d7cc670f92666 100644
--- a/chrome/browser/policy/browser_policy_connector.cc
+++ b/chrome/browser/policy/browser_policy_connector.cc
@@ -17,6 +17,8 @@
 #include "chrome/browser/policy/cloud_policy_subsystem.h"
 #include "chrome/browser/policy/configuration_policy_provider.h"
 #include "chrome/browser/policy/device_management_service.h"
+#include "chrome/browser/policy/managed_mode_policy_provider.h"
+#include "chrome/browser/policy/managed_mode_policy_provider_factory.h"
 #include "chrome/browser/policy/policy_service_impl.h"
 #include "chrome/browser/policy/user_cloud_policy_manager.h"
 #include "chrome/browser/policy/user_policy_cache.h"
@@ -176,6 +178,9 @@ PolicyService* BrowserPolicyConnector::CreatePolicyService(
   if (profile) {
     if (user_cloud_policy_manager_.get())
       providers.push_back(user_cloud_policy_manager_.get());
+
+    providers.push_back(
+        ManagedModePolicyProviderFactory::GetForProfile(profile));

[Mattias Nissler (ping if slow), 2012/06/06 17:22:09]

This is another instance of relying on OnProviderGoingAway AFAICT, because the
provider gets deleted before the policy service. So we're wiggling our way
around destruction order again. I don't think that's a reason to stop this CL,
it's more another indicator to bite the bullet and convert PrefService to a
ProfileKeyedService.

   } else {
     providers.push_back(&user_cloud_policy_provider_);
   }