Keep sync tasks alive as long as it's not finished

chrome/browser/chromeos/drive/sync_client_unittest.cc

Index: chrome/browser/chromeos/drive/sync_client_unittest.cc
diff --git a/chrome/browser/chromeos/drive/sync_client_unittest.cc b/chrome/browser/chromeos/drive/sync_client_unittest.cc
index 911b18cd31fb9b2204567fe8aced13f86e86b7df..cb56dd2863d83657b2cb0f990acc8afc8804ca58 100644
--- a/chrome/browser/chromeos/drive/sync_client_unittest.cc
+++ b/chrome/browser/chromeos/drive/sync_client_unittest.cc
@@ -478,7 +478,6 @@ TEST_F(SyncClientTest, Dependencies) {
 
   // Start syncing the child first.
   sync_client_->AddUpdateTask(ClientContext(USER_INITIATED), local_id2);

[hashimoto, 2014/07/16 11:05:16]

In the new code, RunUntilIdle() is not called here because AddDependentTask()
requires the parent's task to be present.

In the production environment, AddUpdateTask should be called in parent-to-child
order.
We are reversing the order here just for convenience.

-  base::RunLoop().RunUntilIdle();
   // Start syncing the parent later.
   sync_client_->AddUpdateTask(ClientContext(USER_INITIATED), local_id1);
   base::RunLoop().RunUntilIdle();