Modified PolicyService to register observers by domain only, instead of domain and component.

chrome/browser/policy/configuration_policy_pref_store.cc

Index: chrome/browser/policy/configuration_policy_pref_store.cc
diff --git a/chrome/browser/policy/configuration_policy_pref_store.cc b/chrome/browser/policy/configuration_policy_pref_store.cc
index 30bdb12e2f12c5e470ccbdad0eb0b35b944647c0..9dc41512b5f89057dca5d8fbc19cd6620da0af5a 100644
--- a/chrome/browser/policy/configuration_policy_pref_store.cc
+++ b/chrome/browser/policy/configuration_policy_pref_store.cc
@@ -45,7 +45,7 @@ ConfigurationPolicyPrefStore::ConfigurationPolicyPrefStore(
       level_(level) {
   // Read initial policy.
   prefs_.reset(CreatePreferencesFromPolicies());
-  policy_service_->AddObserver(POLICY_DOMAIN_CHROME, "", this);
+  policy_service_->AddObserver(POLICY_DOMAIN_CHROME, this);
 }
 
 void ConfigurationPolicyPrefStore::AddObserver(PrefStore::Observer* observer) {
@@ -109,7 +109,7 @@ ConfigurationPolicyPrefStore::CreateRecommendedPolicyPrefStore(
 }
 
 ConfigurationPolicyPrefStore::~ConfigurationPolicyPrefStore() {
-  policy_service_->RemoveObserver(POLICY_DOMAIN_CHROME, "", this);
+  policy_service_->RemoveObserver(POLICY_DOMAIN_CHROME, this);
 }
 
 void ConfigurationPolicyPrefStore::Refresh() {