Change PrefStore::ReadResult to a boolean.

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 968b95f60b38be5ff66b555d1131bc52047b9678..1449a6d72d10af3a7b0ced00c5dd23cbba450c76 100644
--- a/chrome/browser/policy/configuration_policy_pref_store.cc
+++ b/chrome/browser/policy/configuration_policy_pref_store.cc
@@ -65,16 +65,15 @@ bool ConfigurationPolicyPrefStore::IsInitializationComplete() const {
   return policy_service_->IsInitializationComplete();
 }
 
-PrefStore::ReadResult
-ConfigurationPolicyPrefStore::GetValue(const std::string& key,
-                                       const Value** value) const {
+bool ConfigurationPolicyPrefStore::GetValue(const std::string& key,
+                                            const Value** value) const {
   const Value* stored_value = NULL;
   if (!prefs_.get() || !prefs_->GetValue(key, &stored_value))
-    return PrefStore::READ_NO_VALUE;
+    return false;
 
   if (value)
     *value = stored_value;
-  return PrefStore::READ_OK;
+  return true;
 }
 
 void ConfigurationPolicyPrefStore::OnPolicyUpdated(