Implemented inline login dialog for Chrome OS.

chrome/browser/ui/ash/user_accounts_delegate_chromeos.cc

+// Copyright 2014 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/ash/user_accounts_delegate_chromeos.h"
+
+#include <algorithm>
+#include <iterator>
+
+#include "base/logging.h"
+#include "chrome/browser/chromeos/login/user_manager.h"
+#include "chrome/browser/chromeos/ui/inline_login_dialog.h"
+#include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
+#include "chrome/browser/signin/signin_manager_factory.h"
+#include "components/signin/core/browser/mutable_profile_oauth2_token_service.h"
+#include "components/signin/core/browser/profile_oauth2_token_service.h"
+#include "components/signin/core/browser/signin_manager.h"
+
+namespace chromeos {
+
+UserAccountsDelegateChromeOS::UserAccountsDelegateChromeOS(
+    Profile* user_profile)
+    : user_profile_(user_profile) {
+  ProfileOAuth2TokenServiceFactory::GetForProfile(user_profile_)
+      ->AddObserver(this);
+}
+
+UserAccountsDelegateChromeOS::~UserAccountsDelegateChromeOS() {
+  ProfileOAuth2TokenServiceFactory::GetForProfile(user_profile_)
+      ->RemoveObserver(this);
+}
+
+std::string UserAccountsDelegateChromeOS::GetPrimaryAccount() {
+  return SigninManagerFactory::GetForProfile(user_profile_)
+      ->GetAuthenticatedUsername();

[xiyuan, 2014/04/24 21:22:10]

Should this be GetAuthenticatedAccountId? Right now both returns the same thing
but that is going to change in the future.

The reason I ask because the value returned here is used as |account_id| for
GetAccountDisplayName below. That might break in the future.

[dzhioev (left Google), 2014/04/24 22:06:20]

I'm little confused. Comment for GetAuthenticatedAccountId says that AccountId
could be obfuscated GAIA id. On the other hand I need human-readable email to
display it to user. Is there some way to convert AccountId to email?

The |GetAccountDisplayName| is only needed now to convert canonized email to
"display email" for primary account. 

[xiyuan, 2014/04/24 22:31:51]

The plan is to make GetAuthenticatedAccountId return obfuscated GAIA id.
GetAuthenticatedUsername will be return Gaia email and can be used for display.
My impression is that account id to email mapping is not implemented at the
moment. In the future, we might put the id to User class for ChromeOS and could
use that to map id back to display name. rogerta@ knows more on this topic.

I guess this is okay for now since we always put canonicalized email to
SigninManagerBase.

+}
+
+std::vector<std::string>
+UserAccountsDelegateChromeOS::GetSecondaryAccountsList() {
+  ProfileOAuth2TokenService* token_service =
+      ProfileOAuth2TokenServiceFactory::GetForProfile(user_profile_);
+  std::vector<std::string> accounts = token_service->GetAccounts();
+  // Filter primary account.
+  std::vector<std::string>::iterator it =
+      std::remove(accounts.begin(), accounts.end(), GetPrimaryAccount());
+  if (std::distance(it, accounts.end()) != 1)

[xiyuan, 2014/04/24 21:22:10]

nit: LOG_IF since this "if" only do logging.

[dzhioev (left Google), 2014/04/24 22:06:20]

Done.

+    LOG(WARNING) << "Found " << std::distance(it, accounts.end())
+                 << " primary "
+                    "accounts in the account list.";
+  accounts.erase(it, accounts.end());
+  return accounts;
+}
+
+std::string UserAccountsDelegateChromeOS::GetAccountDisplayName(
+    const std::string& account_id) {
+  User* user = UserManager::Get()->GetUserByProfile(user_profile_);
+  if (user->email() == account_id && !user->display_email().empty())
+    return user->display_email();
+  return account_id;
+}
+
+void UserAccountsDelegateChromeOS::DeleteAccount(
+    const std::string& account_id) {
+  MutableProfileOAuth2TokenService* oauth2_token_service =
+      ProfileOAuth2TokenServiceFactory::GetPlatformSpecificForProfile(
+          user_profile_);
+  oauth2_token_service->RevokeCredentials(account_id);
+}
+
+void UserAccountsDelegateChromeOS::LaunchAddAccountDialog() {
+  ui::InlineLoginDialog::Show(user_profile_);
+}
+
+void UserAccountsDelegateChromeOS::OnRefreshTokenAvailable(
+    const std::string& account_id) {
+  NotifyAccountListChanged();
+}
+
+void UserAccountsDelegateChromeOS::OnRefreshTokenRevoked(
+    const std::string& account_id) {
+  NotifyAccountListChanged();
+}
+
+}  // namespace chromeos