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

chrome/browser/password_manager/password_manager_infobar_delegate.h

+// 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.
+
+#ifndef CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_MANAGER_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_MANAGER_INFOBAR_DELEGATE_H_
+
+#include "components/infobars/core/confirm_infobar_delegate.h"
+#include "ui/gfx/range/range.h"
+
+// Base class for some of the password manager infobar delegates, e.g.
+// SavePasswordInfoBarDelegate.
+class PasswordManagerInfoBarDelegate : public ConfirmInfoBarDelegate {
+ public:
+  ~PasswordManagerInfoBarDelegate() override;
+
+  const gfx::Range& message_link_range() const { return message_link_range_; }
+
+  // ConfirmInfoBarDelegate:
+  Type GetInfoBarType() const override;
+  InfoBarAutomationType GetInfoBarAutomationType() const override;
+  int GetIconId() const override;
+  bool ShouldExpire(const NavigationDetails& details) const override;
+  base::string16 GetMessageText() const override;
+  bool LinkClicked(WindowOpenDisposition disposition) override;
+
+ protected:
+  PasswordManagerInfoBarDelegate();
+
+  void SetMessage(const base::string16& message);
+  void SetMessageLinkRange(const gfx::Range& message_link_range);
+
+ private:
+  // Message for the infobar: branded as a part of Google Smart Lock for signed
+  // users.
+  base::string16 message_;
+
+  // If set, describes the location of the link to the help center article for
+  // Smart Lock.
+  gfx::Range message_link_range_;
+
+  DISALLOW_COPY_AND_ASSIGN(PasswordManagerInfoBarDelegate);
+};
+
+#endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_MANAGER_INFOBAR_DELEGATE_H_