sync: Loop committing items without downloading updates

chrome/browser/sync/profile_sync_service_harness.cc

Index: chrome/browser/sync/profile_sync_service_harness.cc
diff --git a/chrome/browser/sync/profile_sync_service_harness.cc b/chrome/browser/sync/profile_sync_service_harness.cc
index d7bdb1c14124f60198b9043c02ff27bbfc7652ed..2560aaa1e78ae3cf98599ca3dfc21d0e989238c7 100644
--- a/chrome/browser/sync/profile_sync_service_harness.cc
+++ b/chrome/browser/sync/profile_sync_service_harness.cc
@@ -784,10 +784,11 @@ bool ProfileSyncServiceHarness::IsFullySynced() {
     return false;
   }
   const SyncSessionSnapshot* snap = GetLastSessionSnapshot();
-  // snap->unsynced_count == 0 is a fairly reliable indicator of whether or not
-  // our timestamp is in sync with the server.
-  bool is_fully_synced = IsDataSyncedImpl(snap) &&
-      snap->unsynced_count == 0;
+  // If we didn't try to commit anything in the previous cycle, there's a
+  // good chance that we're now fully up to date.
+  bool is_fully_synced =
+      (snap->errors.last_post_commit_result == browser_sync::UNSET)
+      && IsDataSyncedImpl(snap);
 
   DVLOG(1) << GetClientInfoString(
       is_fully_synced ? "IsFullySynced: true" : "IsFullySynced: false");
@@ -993,8 +994,6 @@ std::string ProfileSyncServiceHarness::GetClientInfoString(
          << snap->has_more_to_sync
          << ", has_unsynced_items: "
          << service()->HasUnsyncedItems()
-         << ", unsynced_count: "
-         << snap->unsynced_count
          << ", encryption conflicts: "
          << snap->num_encryption_conflicts
          << ", hierarchy conflicts: "