Fix policy invalidator lifecycle bugs for Android.

chrome/browser/policy/cloud/cloud_policy_core.cc

Index: chrome/browser/policy/cloud/cloud_policy_core.cc
diff --git a/chrome/browser/policy/cloud/cloud_policy_core.cc b/chrome/browser/policy/cloud/cloud_policy_core.cc
index 68dd1753169f524d787584f53057fa2ebe569e76..52eebac50dbb6084095c791504927a8946f162a7 100644
--- a/chrome/browser/policy/cloud/cloud_policy_core.cc
+++ b/chrome/browser/policy/cloud/cloud_policy_core.cc
@@ -15,6 +15,8 @@
 
 namespace policy {
 
+CloudPolicyCore::Observer::~Observer() {}
+
 CloudPolicyCore::CloudPolicyCore(const PolicyNamespaceKey& key,
                                  CloudPolicyStore* store)
     : policy_ns_key_(key),
@@ -27,9 +29,12 @@ void CloudPolicyCore::Connect(scoped_ptr<CloudPolicyClient> client) {
   CHECK(client);
   client_ = client.Pass();
   service_.reset(new CloudPolicyService(policy_ns_key_, client_.get(), store_));
+  FOR_EACH_OBSERVER(Observer, observers_, OnCoreConnected(this));
 }
 
 void CloudPolicyCore::Disconnect() {
+  if (client_)
+    FOR_EACH_OBSERVER(Observer, observers_, OnCoreDisconnecting(this));
   refresh_delay_.reset();
   refresh_scheduler_.reset();
   service_.reset();
@@ -48,6 +53,7 @@ void CloudPolicyCore::StartRefreshScheduler() {
             client_.get(), store_,
             base::MessageLoop::current()->message_loop_proxy()));
     UpdateRefreshDelayFromPref();
+    FOR_EACH_OBSERVER(Observer, observers_, OnRefreshSchedulerStarted(this));
   }
 }
 
@@ -62,6 +68,14 @@ void CloudPolicyCore::TrackRefreshDelayPref(
   UpdateRefreshDelayFromPref();
 }
 
+void CloudPolicyCore::AddObserver(CloudPolicyCore::Observer* observer) {
+  observers_.AddObserver(observer);
+}
+
+void CloudPolicyCore::RemoveObserver(CloudPolicyCore::Observer* observer) {
+  observers_.RemoveObserver(observer);
+}
+
 void CloudPolicyCore::UpdateRefreshDelayFromPref() {
   if (refresh_scheduler_ && refresh_delay_)
     refresh_scheduler_->SetRefreshDelay(refresh_delay_->GetValue());