Pref service: Batch pref updates.

services/preferences/public/cpp/tests/pref_store_client_unittest.cc

Index: services/preferences/public/cpp/tests/pref_store_client_unittest.cc
diff --git a/services/preferences/public/cpp/tests/pref_store_client_unittest.cc b/services/preferences/public/cpp/tests/pref_store_client_unittest.cc
index 6a488a16b5935c3e7451fea9f4720a67a6078706..dbf86d41650d6a7ab3255e6567dc9738dfa4583a 100644
--- a/services/preferences/public/cpp/tests/pref_store_client_unittest.cc
+++ b/services/preferences/public/cpp/tests/pref_store_client_unittest.cc
@@ -40,7 +40,9 @@ class PrefStoreClientTest : public testing::Test {
 
   bool initialized() { return store_->IsInitializationComplete(); }
   void OnPrefChanged(const std::string& key, const base::Value& value) {
-    observer_ptr_->OnPrefChanged(key, value.CreateDeepCopy());
+    std::vector<mojom::PrefUpdatePtr> updates;
+    updates.push_back(mojom::PrefUpdate::New(key, value.CreateDeepCopy(), 0));
+    observer_ptr_->OnPrefsChanged(std::move(updates));
   }
   void OnInitializationCompleted() {
     observer_ptr_->OnInitializationCompleted(true);