Don't clear the net predictors prefs on startup

chrome/browser/browsing_data/browsing_data_remover.cc

Index: chrome/browser/browsing_data/browsing_data_remover.cc
diff --git a/chrome/browser/browsing_data/browsing_data_remover.cc b/chrome/browser/browsing_data/browsing_data_remover.cc
index c58ab51a4923239b8d8d0f3ea16a5e224ae75b50..a61fbf047fc421cdc85179e4935d59ab1d25bb24 100644
--- a/chrome/browser/browsing_data/browsing_data_remover.cc
+++ b/chrome/browser/browsing_data/browsing_data_remover.cc
@@ -483,6 +483,7 @@ void BrowsingDataRemover::RemoveImpl(
                      profile_->GetNetworkPredictor()),
           base::Bind(&BrowsingDataRemover::OnClearedNetworkPredictor,
                      weak_ptr_factory_.GetWeakPtr()));
+      profile_->GetNetworkPredictor()->ClearPrefsOnUIThread();
     }
 
     // As part of history deletion we also delete the auto-generated keywords.