[Password Manager] Extract some methods of SavePasswordInfobarDelegate to separate class.

chrome/browser/password_manager/password_manager_infobar_delegate.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_infobar_delegate.h"
+
+#include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/grit/chromium_strings.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/infobars/core/infobar.h"
+#include "content/public/browser/web_contents.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+PasswordManagerInfoBarDelegate::~PasswordManagerInfoBarDelegate() {}
+
+PasswordManagerInfoBarDelegate::PasswordManagerInfoBarDelegate()
+    : ConfirmInfoBarDelegate(), message_link_range_(gfx::Range()) {}
+
+infobars::InfoBarDelegate::Type PasswordManagerInfoBarDelegate::GetInfoBarType()
+    const {
+  return PAGE_ACTION_TYPE;
+}
+
+infobars::InfoBarDelegate::InfoBarAutomationType
+PasswordManagerInfoBarDelegate::GetInfoBarAutomationType() const {
+  return PASSWORD_INFOBAR;
+}
+
+int PasswordManagerInfoBarDelegate::GetIconId() const {
+  return IDR_INFOBAR_SAVE_PASSWORD;
+}
+
+bool PasswordManagerInfoBarDelegate::ShouldExpire(
+    const NavigationDetails& details) const {
+  return !details.is_redirect && ConfirmInfoBarDelegate::ShouldExpire(details);
+}
+
+base::string16 PasswordManagerInfoBarDelegate::GetMessageText() const {
+  return message_;
+}
+
+bool PasswordManagerInfoBarDelegate::LinkClicked(
+    WindowOpenDisposition disposition) {
+  InfoBarService::WebContentsFromInfoBar(infobar())
+      ->OpenURL(content::OpenURLParams(
+          GURL(l10n_util::GetStringUTF16(IDS_PASSWORD_MANAGER_SMART_LOCK_PAGE)),
+          content::Referrer(),
+          (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
+          ui::PAGE_TRANSITION_LINK, false));
+  return true;
+}
+
+void PasswordManagerInfoBarDelegate::SetMessage(const base::string16& message) {
+  message_ = message;
+}
+
+void PasswordManagerInfoBarDelegate::SetMessageLinkRange(
+    const gfx::Range& message_link_range) {
+  message_link_range_ = message_link_range;
+}