Re-land r248110 with ASAN error fixed.

components/autofill/content/renderer/test_password_generation_agent.cc

+// 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.
+
+#include "components/autofill/content/renderer/test_password_generation_agent.h"
+
+namespace autofill {
+
+TestPasswordGenerationAgent::TestPasswordGenerationAgent(
+    content::RenderView* render_view)
+    : PasswordGenerationAgent(render_view) {
+  // Always enable when testing.
+  set_enabled(true);
+}
+
+TestPasswordGenerationAgent::~TestPasswordGenerationAgent() {}
+
+bool TestPasswordGenerationAgent::OnMessageReceived(
+    const IPC::Message& message) {
+  return PasswordGenerationAgent::OnMessageReceived(message);
+}
+
+bool TestPasswordGenerationAgent::ShouldAnalyzeDocument(
+    const blink::WebDocument& document) const {
+  return true;
+}
+
+bool TestPasswordGenerationAgent::Send(IPC::Message* message) {
+  messages_.push_back(message);
+  return true;
+}
+
+}  // namespace autofill