Update incomplete credentials in Login Database

chrome/browser/password_manager/password_form_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/password_manager/password_form_manager.h"
 
 #include <algorithm>
 
 #include "base/metrics/histogram.h"
 #include "base/strings/string_split.h"
@@ skipping 220 matching lines @@
     pending_credentials_.other_possible_usernames =
         credentials.other_possible_usernames;
   }
 
   pending_credentials_.action = credentials.action;
   // If the user selected credentials we autofilled from a PasswordForm
   // that contained no action URL (IE6/7 imported passwords, for example),
   // bless it with the action URL from the observed form. See bug 1107719.
   if (pending_credentials_.action.is_empty())
     pending_credentials_.action = observed_form_.action;
+  // Similarly, bless incomplete credentials with *_element info.
+  if (pending_credentials_.password_element.empty())
+    pending_credentials_.password_element = observed_form_.password_element;
+  if (pending_credentials_.username_element.empty())
+    pending_credentials_.username_element = observed_form_.username_element;
+  if (pending_credentials_.submit_element.empty())
+    pending_credentials_.submit_element = observed_form_.submit_element;
 
   pending_credentials_.password_value = credentials.password_value;
   pending_credentials_.preferred = credentials.preferred;
 
   if (has_generated_password_)
     pending_credentials_.type = PasswordForm::TYPE_GENERATED;
 }
 
 void PasswordFormManager::Save() {
   DCHECK_EQ(state_, POST_MATCHING_PHASE);
@@ skipping 386 matching lines @@
   return score;
 }
 
 void PasswordFormManager::SubmitPassed() {
   submit_result_ = kSubmitResultPassed;
 }
 
 void PasswordFormManager::SubmitFailed() {
   submit_result_ = kSubmitResultFailed;
 }