[PasswordManager] Fix Flaky BrowserTest related to dynamically created

chrome/browser/password_manager/password_manager_test_base.cc

 // Copyright 2015 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_manager_test_base.h"
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/infobars/infobar_service.h"
@@ skipping 39 matching lines @@
 void NavigationObserver::NavigationEntryCommitted(
     const content::LoadCommittedDetails& load_details) {
   if (quit_on_entry_committed_)
     message_loop_runner_->Quit();
 }
 
 void NavigationObserver::Wait() {
   message_loop_runner_->Run();
 }
 
+DummyStoreConsumer::DummyStoreConsumer()
+    : message_loop_runner_(new content::MessageLoopRunner) {
+}
+
+DummyStoreConsumer::~DummyStoreConsumer() {
+}
+
+void DummyStoreConsumer::RequestLoginsAndWait(
+    scoped_refptr<password_manager::PasswordStore> password_store) {
+  autofill::PasswordForm form;
+  password_store->GetLogins(
+      form, password_manager::PasswordStore::DISALLOW_PROMPT, this);
+  message_loop_runner_->Run();
+}
+
+void DummyStoreConsumer::OnGetPasswordStoreResults(
+    ScopedVector<autofill::PasswordForm> results) {
+  message_loop_runner_->Quit();
+}
+
 PromptObserver::PromptObserver() {
 }
+
 PromptObserver::~PromptObserver() {
 }
 
 bool PromptObserver::IsShowingUpdatePrompt() const {
   // TODO(dvadym): Make this method pure virtual as soon as update UI is
   // implemented for infobar. http://crbug.com/359315
   return false;
 }
 
 void PromptObserver::Accept() const {
@@ skipping 220 matching lines @@
       "  var element = document.getElementById('%s');"
       "window.domAutomationController.send(element && element.value == '%s');",
       iframe_id.c_str(), iframe_id.c_str(), element_id.c_str(),
       element_id.c_str(), expected_value.c_str());
   bool return_value = false;
   ASSERT_TRUE(content::ExecuteScriptAndExtractBool(
       RenderViewHost(), value_check_script, &return_value));
   EXPECT_TRUE(return_value) << "element_id = " << element_id
                             << ", expected_value = " << expected_value;
 }