Implemented status section functionality for about:policy.

chrome/browser/policy/configuration_policy_reader.cc

Index: chrome/browser/policy/configuration_policy_reader.cc
diff --git a/chrome/browser/policy/configuration_policy_reader.cc b/chrome/browser/policy/configuration_policy_reader.cc
index 472a151a70abdfdea0b83956d33b475c1e4a9171..e6c0914758fd63774db7772b71f7affd28acb0db 100644
--- a/chrome/browser/policy/configuration_policy_reader.cc
+++ b/chrome/browser/policy/configuration_policy_reader.cc
@@ -103,6 +103,14 @@ void ConfigurationPolicyReader::OnProviderGoingAway() {
   provider_ = NULL;
 }
 
+void ConfigurationPolicyReader::AddObserver(Observer* observer) {
+  observers_.AddObserver(observer);
+}
+
+void ConfigurationPolicyReader::RemoveObserver(Observer* observer) {
+  observers_.RemoveObserver(observer);
+}
+
 // static
 ConfigurationPolicyReader*
     ConfigurationPolicyReader::CreateManagedPlatformPolicyReader() {
@@ -172,6 +180,8 @@ void ConfigurationPolicyReader::Refresh() {
   scoped_ptr<ConfigurationPolicyStatusKeeper> new_keeper(
       new ConfigurationPolicyStatusKeeper(provider_, policy_level_));
   policy_keeper_.reset(new_keeper.release());
+
+  FOR_EACH_OBSERVER(Observer, observers_, OnPolicyValuesChanged());
 }
 
 // PolicyStatus
@@ -188,6 +198,20 @@ PolicyStatus::PolicyStatus(ConfigurationPolicyReader* managed_platform,
 PolicyStatus::~PolicyStatus() {
 }
 
+void PolicyStatus::AddObserver(Observer* observer) const {
+  managed_platform_->AddObserver(observer);
+  managed_cloud_->AddObserver(observer);
+  recommended_platform_->AddObserver(observer);
+  recommended_cloud_->AddObserver(observer);
+}
+
+void PolicyStatus::RemoveObserver(Observer* observer) const {
+  managed_platform_->RemoveObserver(observer);
+  managed_cloud_->RemoveObserver(observer);
+  recommended_platform_->RemoveObserver(observer);
+  recommended_cloud_->RemoveObserver(observer);
+}
+
 ListValue* PolicyStatus::GetPolicyStatusList(bool* any_policies_sent) const {
   ListValue* result = new ListValue();
   std::vector<DictionaryValue*> unsent_policies;