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

chrome/browser/password_manager/update_password_infobar_delegate.cc

+// 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.
+
+#include "chrome/browser/password_manager/update_password_infobar_delegate.h"
+
+#include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/browser/password_manager/chrome_password_manager_client.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
+#include "chrome/browser/ui/android/infobars/auto_signin_first_run_infobar.h"
+#include "chrome/browser/ui/android/infobars/update_password_infobar.h"
+#include "chrome/browser/ui/passwords/manage_passwords_view_utils.h"
+#include "chrome/grit/chromium_strings.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/browser_sync/browser/profile_sync_service.h"
+#include "components/infobars/core/infobar.h"
+#include "components/password_manager/core/browser/password_bubble_experiment.h"
+#include "content/public/browser/web_contents.h"
+#include "ui/base/l10n/l10n_util.h"
+
+// static
+void UpdatePasswordInfoBarDelegate::Create(
+    content::WebContents* web_contents,
+    scoped_ptr<password_manager::PasswordFormManager> form_to_save) {
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents->GetBrowserContext());
+  sync_driver::SyncService* sync_service =
+      ProfileSyncServiceFactory::GetForProfile(profile);
+  bool is_smartlock_branding_enabled =
+      password_bubble_experiment::IsSmartLockBrandingEnabled(sync_service);
+  InfoBarService::FromWebContents(web_contents)
+      ->AddInfoBar(make_scoped_ptr(new UpdatePasswordInfoBar(
+          make_scoped_ptr(new UpdatePasswordInfoBarDelegate(
+              web_contents, std::move(form_to_save),
+              is_smartlock_branding_enabled)))));
+}
+
+UpdatePasswordInfoBarDelegate::UpdatePasswordInfoBarDelegate(
+    content::WebContents* web_contents,
+    scoped_ptr<password_manager::PasswordFormManager> form_to_update,
+    bool is_smartlock_branding_enabled)
+    : PasswordManagerInfoBarDelegate(),
+      is_smartlock_branding_enabled_(is_smartlock_branding_enabled) {
+  // TODO(crbug.com/577129): Add histograms.
+  passwords_data_.set_client(
+      ChromePasswordManagerClient::FromWebContents(web_contents));
+  passwords_data_.OnUpdatePassword(std::move(form_to_update));
+  if (is_smartlock_branding_enabled) {
+    base::string16 branding_ = l10n_util::GetStringUTF16(
+        IDS_PASSWORD_MANAGER_SMART_LOCK_FOR_PASSWORDS);
+  } else {
+    branding_ = l10n_util::GetStringUTF16(IDS_PASSWORD_MANAGER_TITLE_BRAND);
+  }
+}
+
+UpdatePasswordInfoBarDelegate::~UpdatePasswordInfoBarDelegate() {}
+
+bool UpdatePasswordInfoBarDelegate::ShowMultipleAccounts() const {
+  const password_manager::PasswordFormManager* form_manager =
+      passwords_data_.form_manager();
+  bool is_password_overriden =
+      form_manager ? form_manager->password_overridden() : false;
+  return GetCurrentForms().size() > 1 && !is_password_overriden;
+}
+
+base::string16 UpdatePasswordInfoBarDelegate::GetUsernameForOneAccountCase() {
+  password_manager::PasswordFormManager* form_manager =
+      passwords_data_.form_manager();
+  return form_manager->pending_credentials().username_value;
+}
+
+void UpdatePasswordInfoBarDelegate::UpdatePasswordInternal(int form_index) {
+  password_manager::PasswordFormManager* form_manager =
+      passwords_data_.form_manager();
+  if (form_index && ShowMultipleAccounts()) {
+    CHECK_GT(GetCurrentForms().size(), static_cast<unsigned int>(form_index));

[vabr (Chromium), 2016/01/13 16:04:34]

Instead of static_cast, please do a checked_cast (from
base/numerics/safe_conversions.h).

[vabr (Chromium), 2016/01/13 16:04:34]

Please do an explicit
CHECK_LE(0, form_index);
to help the readability.

+    form_manager->Update(*GetCurrentForms()[form_index]);
+  } else {
+    form_manager->Update(form_manager->pending_credentials());
+  }
+}
+
+infobars::InfoBarDelegate::InfoBarIdentifier
+UpdatePasswordInfoBarDelegate::GetIdentifier() const {
+  return UPDATE_PASSWORD_INFOBAR_DELEGATE;
+}
+
+base::string16 UpdatePasswordInfoBarDelegate::GetButtonLabel(
+    InfoBarButton button) const {
+  return l10n_util::GetStringUTF16((button == BUTTON_OK)
+                                       ? IDS_PASSWORD_MANAGER_UPDATE_BUTTON
+                                       : IDS_PASSWORD_MANAGER_CANCEL_BUTTON);
+}
+
+bool UpdatePasswordInfoBarDelegate::Accept() {
+  CHECK(!ShowMultipleAccounts());
+  UpdatePasswordInternal(

[vabr (Chromium), 2016/01/13 16:04:34]

Please create a separate method, e.g. UpdatePasswordWithPending, instead of
using a special argument value.

(If you kept the -1, then at least document it. But I strongly advise against
it, it is rather unexpected.)

+      -1 /* special case with only one pending credentials */);
+  return true;
+}
+
+bool UpdatePasswordInfoBarDelegate::Cancel() {
+  return true;
+}