Add password form search using blink::WebNode reference comparison.

components/autofill/content/renderer/BUILD.gn

 # Copyright 2014 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.
 
 static_library("renderer") {
   sources = [
     "autofill_agent.cc",
     "autofill_agent.h",
     "form_autofill_util.cc",
     "form_autofill_util.h",
     "form_cache.cc",
     "form_cache.h",
     "form_classifier.cc",
     "form_classifier.h",
     "page_click_listener.h",
     "page_click_tracker.cc",
     "page_click_tracker.h",
     "password_autofill_agent.cc",
     "password_autofill_agent.h",
     "password_form_conversion_utils.cc",
     "password_form_conversion_utils.h",
     "password_generation_agent.cc",
     "password_generation_agent.h",
+    "provisionally_saved_password_form.cc",
+    "provisionally_saved_password_form.h",
     "renderer_save_password_progress_logger.cc",
     "renderer_save_password_progress_logger.h",
   ]
 
   deps = [
     "//base",
     "//base:i18n",
     "//components/autofill/content/common:mojo_interfaces",
     "//components/autofill/core/common",
 
@@ skipping 43 matching lines @@
   sources = [
     "renderer_save_password_progress_logger_unittest.cc",
   ]
 
   deps = [
     ":test_support",
     "//components/autofill/content/common:mojo_interfaces",
     "//testing/gtest",
   ]
 }