fix spelling of comments

chrome/browser/sync/glue/typed_url_model_associator.cc

Index: chrome/browser/sync/glue/typed_url_model_associator.cc
diff --git a/chrome/browser/sync/glue/typed_url_model_associator.cc b/chrome/browser/sync/glue/typed_url_model_associator.cc
index 02144fc8373c318eb4663a88fe7343b67807da84..829001077e45d8be7a2b28477ec51a96319f7d21 100644
--- a/chrome/browser/sync/glue/typed_url_model_associator.cc
+++ b/chrome/browser/sync/glue/typed_url_model_associator.cc
@@ -177,7 +177,7 @@ bool TypedUrlModelAssociator::AssociateModels() {
   // the history database after closing the write transaction, since
   // this is the only thread that writes to the database.  We also don't have
   // to worry about the sync model getting out of sync, because changes are
-  // propogated to the ChangeProcessor on this thread.
+  // propagated to the ChangeProcessor on this thread.
   return WriteToHistoryBackend(&titles, &new_urls, &updated_urls,
                                &new_visits, NULL);
 }