Add additional error logging to investigate Autocomplete Sync failures.

chrome/browser/sync/glue/password_model_associator.cc

Index: chrome/browser/sync/glue/password_model_associator.cc
diff --git a/chrome/browser/sync/glue/password_model_associator.cc b/chrome/browser/sync/glue/password_model_associator.cc
index 6565c27bf9e8fb871882967651a7554a0083f174..8836f67cf9f67c467ec02a2f0faa02e8ba4a7efe 100644
--- a/chrome/browser/sync/glue/password_model_associator.cc
+++ b/chrome/browser/sync/glue/password_model_associator.cc
@@ -117,8 +117,9 @@ SyncError PasswordModelAssociator::AssociateModels() {
         Associate(&tag, node.GetId());
       } else {
         sync_api::WriteNode node(&trans);
-        if (!node.InitUniqueByCreation(syncable::PASSWORDS,
-                                       password_root, tag)) {
+        sync_api::WriteNode::InitUniqueByCreationResult result =
+            node.InitUniqueByCreation(syncable::PASSWORDS, password_root, tag);
+        if (result != sync_api::WriteNode::INIT_SUCCESS) {
           STLDeleteElements(&passwords);
           return error_handler_->CreateAndUploadError(
               FROM_HERE,