Adds async interface method to PersistentPrefStore.

chrome/browser/prefs/pref_value_store_unittest.cc

Index: chrome/browser/prefs/pref_value_store_unittest.cc
diff --git a/chrome/browser/prefs/pref_value_store_unittest.cc b/chrome/browser/prefs/pref_value_store_unittest.cc
index 6819e4653f42f3cb50924c31f98cbc7663ba35d6..55caeff8f21d756ef617f91661d20ab8060b8354 100644
--- a/chrome/browser/prefs/pref_value_store_unittest.cc
+++ b/chrome/browser/prefs/pref_value_store_unittest.cc
@@ -28,7 +28,7 @@ namespace {
 class MockPrefNotifier : public PrefNotifier {
  public:
   MOCK_METHOD1(OnPreferenceChanged, void(const std::string&));
-  MOCK_METHOD0(OnInitializationCompleted, void());
+  MOCK_METHOD1(OnInitializationCompleted, void(bool));
 };
 
 }  // namespace
@@ -451,7 +451,7 @@ TEST_F(PrefValueStoreTest, PrefChanges) {
 }
 
 TEST_F(PrefValueStoreTest, OnInitializationCompleted) {
-  EXPECT_CALL(pref_notifier_, OnInitializationCompleted()).Times(0);
+  EXPECT_CALL(pref_notifier_, OnInitializationCompleted(true)).Times(0);
   managed_platform_pref_store_->SetInitializationCompleted();
   managed_cloud_pref_store_->SetInitializationCompleted();
   extension_pref_store_->SetInitializationCompleted();
@@ -462,7 +462,7 @@ TEST_F(PrefValueStoreTest, OnInitializationCompleted) {
   Mock::VerifyAndClearExpectations(&pref_notifier_);
 
   // The notification should only be triggered after the last store is done.
-  EXPECT_CALL(pref_notifier_, OnInitializationCompleted()).Times(1);
+  EXPECT_CALL(pref_notifier_, OnInitializationCompleted(true)).Times(1);
   user_pref_store_->SetInitializationCompleted();
   Mock::VerifyAndClearExpectations(&pref_notifier_);
 }