[Sync] Persist keystore key across restarts

sync/internal_api/test/fake_sync_manager.cc

Index: sync/internal_api/test/fake_sync_manager.cc
diff --git a/sync/internal_api/test/fake_sync_manager.cc b/sync/internal_api/test/fake_sync_manager.cc
index a507239e289dcacb0104f8cda58a18264e581fd7..b0b9ac2962e3220a25c353ab74c6c01a0a87c0d5 100644
--- a/sync/internal_api/test/fake_sync_manager.cc
+++ b/sync/internal_api/test/fake_sync_manager.cc
@@ -62,6 +62,7 @@ bool FakeSyncManager::Init(
     const SyncCredentials& credentials,
     scoped_ptr<SyncNotifier> sync_notifier,
     const std::string& restored_key_for_bootstrapping,
+    const std::string& restored_keystore_key_for_bootstrapping,
     bool keystore_encryption_enabled,
     scoped_ptr<InternalComponentsFactory> internal_components_factory,
     Encryptor* encryptor,
@@ -177,6 +178,10 @@ bool FakeSyncManager::IsUsingExplicitPassphrase() {
   return false;
 }
 
+bool FakeSyncManager::GetKeystoreKeyBootstrapToken(std::string* token) {
+  return false;
+}
+
 void FakeSyncManager::SaveChanges() {
   // Do nothing.
 }