sync: Gracefully handle very early shutdown

sync/internal_api/syncapi_server_connection_manager.cc

Index: sync/internal_api/syncapi_server_connection_manager.cc
diff --git a/sync/internal_api/syncapi_server_connection_manager.cc b/sync/internal_api/syncapi_server_connection_manager.cc
index 224d579a22a0a6b21c92dd30489a1def208946f3..4c29f105f96633ac3fde0e74c787413949265d5e 100644
--- a/sync/internal_api/syncapi_server_connection_manager.cc
+++ b/sync/internal_api/syncapi_server_connection_manager.cc
@@ -92,17 +92,23 @@ SyncAPIServerConnectionManager::SyncAPIServerConnectionManager(
     int port,
     bool use_ssl,
     bool use_oauth2_token,
-    HttpPostProviderFactory* factory)
-    : ServerConnectionManager(server, port, use_ssl, use_oauth2_token),
+    HttpPostProviderFactory* factory,
+    CancelationSignal* cancelation_signal)
+    : ServerConnectionManager(server,
+                              port,
+                              use_ssl,
+                              use_oauth2_token,
+                              cancelation_signal),
       post_provider_factory_(factory) {
   DCHECK(post_provider_factory_.get());
 }
 
 SyncAPIServerConnectionManager::~SyncAPIServerConnectionManager() {}
 
-ServerConnectionManager::Connection*
+scoped_ptr<ServerConnectionManager::Connection>
 SyncAPIServerConnectionManager::MakeConnection() {
-  return new SyncAPIBridgedConnection(this, post_provider_factory_.get());
+  return scoped_ptr<Connection>(
+      new SyncAPIBridgedConnection(this, post_provider_factory_.get()));
 }
 
 }  // namespace syncer