[Password Manager] Update Confirmation UI for saved password change for Chrome on Android.

chrome/browser/password_manager/update_password_infobar_delegate.h

+// Copyright 2016 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_UPDATE_PASSWORD_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_PASSWORD_MANAGER_UPDATE_PASSWORD_INFOBAR_DELEGATE_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/password_manager/password_manager_infobar_delegate.h"
+#include "chrome/browser/ui/passwords/manage_passwords_state.h"
+#include "components/password_manager/core/browser/password_form_manager.h"
+
+namespace content {
+class WebContents;
+}
+
+// If PasswordManager encounters the login which is already known or user fills
+// the password change form, then user is prompted with an infobar asking if
+// already saved credentials should be updated or not.
+// In case several credentials are stored for the web site, user can choose
+// which one should be updated.

[Peter Kasting, 2016/02/13 01:44:52]

Nit: Grammar.  How about:

An infobar delegate which asks the user if the password should be updated for a
set of saved credentials for a site.  If several such sets are present, the user
can choose which one to update.  PasswordManager displays this infobar when the
user signs into the site with a new password for a known username or fills in a
password change form.

[melandory, 2016/02/22 12:41:09]

Done.

+class UpdatePasswordInfoBarDelegate : public PasswordManagerInfoBarDelegate {
+ public:
+  static void Create(
+      content::WebContents* web_contents,
+      scoped_ptr<password_manager::PasswordFormManager> form_to_update);
+
+  ~UpdatePasswordInfoBarDelegate() override;
+
+  base::string16 branding() const { return branding_; }
+  bool is_smartlock_branding_enabled() const {
+    return is_smartlock_branding_enabled_;
+  }
+
+  // Returns true if infobar for the multi credentials case should be shown, e.g
+  // user changing a password on a password change form and has several
+  // credentials save for the web site.
+  bool ShowMultipleAccounts() const;
+
+  const std::vector<const autofill::PasswordForm*>& GetCurrentForms() const;
+
+  // Returns the username of the saved credentials in the case when there is
+  // only one credential pair stored.
+  base::string16 GetUsernameForOneAccountCase();

[Peter Kasting, 2016/02/13 01:44:52]

Nit: One -> Single

[melandory, 2016/02/22 12:41:09]

Done.

+
+ private:
+  UpdatePasswordInfoBarDelegate(
+      content::WebContents* web_contents,
+      scoped_ptr<password_manager::PasswordFormManager> form_to_update,
+      bool is_smartlock_branding_enabled);
+
+  // ConfirmInfoBarDelegate:
+  infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
+  base::string16 GetButtonLabel(InfoBarButton button) const override;
+  bool Accept() override;
+  bool Cancel() override;
+
+  ManagePasswordsState passwords_data_;
+  base::string16 branding_;
+  bool is_smartlock_branding_enabled_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdatePasswordInfoBarDelegate);
+};
+
+#endif  // CHROME_BROWSER_PASSWORD_MANAGER_UPDATE_PASSWORD_INFOBAR_DELEGATE_H_