fix spelling of comments

chrome/browser/sync/glue/autofill_model_associator.cc

Index: chrome/browser/sync/glue/autofill_model_associator.cc
diff --git a/chrome/browser/sync/glue/autofill_model_associator.cc b/chrome/browser/sync/glue/autofill_model_associator.cc
index 134fea43c497f49f8e060c9f9a28384c51846915..b2058a109a2c5ffe4e12a7c1e1f127ed0a19cfcb 100644
--- a/chrome/browser/sync/glue/autofill_model_associator.cc
+++ b/chrome/browser/sync/glue/autofill_model_associator.cc
@@ -178,7 +178,7 @@ bool AutofillModelAssociator::AssociateModels() {
   // the autofill 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.
   if (!SaveChangesToWebData(bundle)) {
     LOG(ERROR) << "Failed to update autofill entries.";
     return false;