Introduce AutofillClient and use it to get rid of PasswordManager dependency.

chrome/browser/ui/autofill/tab_autofill_manager_delegate.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/ui/autofill/tab_autofill_manager_delegate.h"
+
+#include "base/logging.h"
+#include "chrome/browser/infobars/infobar_tab_helper.h"
+#include "chrome/browser/password_manager/password_manager.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/tab_contents/tab_contents.h"
+
+TabAutofillManagerDelegate::TabAutofillManagerDelegate(TabContents* tab)
+    : tab_(tab) {
+  DCHECK(tab_);
+}
+
+InfoBarTabService* TabAutofillManagerDelegate::GetInfoBarService() {
+  return tab_->infobar_tab_helper();
+}
+
+PrefServiceBase* TabAutofillManagerDelegate::GetPrefs() {
+  return tab_->profile()->GetPrefs();
+}
+
+bool TabAutofillManagerDelegate::IsSavingPasswordsEnabled() const {
+  return tab_->password_manager()->IsSavingEnabled();
+}