Adding mojo calls for several lock screen related operations.

chrome/browser/ui/ash/lock_screen_client.cc

Index: chrome/browser/ui/ash/lock_screen_client.cc
diff --git a/chrome/browser/ui/ash/lock_screen_client.cc b/chrome/browser/ui/ash/lock_screen_client.cc
index 802366a54de0a058d1117cac72a254155cd61a44..e447b586e3499aae2fb8d9fd9a634dae33418d38 100644
--- a/chrome/browser/ui/ash/lock_screen_client.cc
+++ b/chrome/browser/ui/ash/lock_screen_client.cc
@@ -4,8 +4,12 @@
 
 #include "chrome/browser/ui/ash/lock_screen_client.h"
 
+#include <utility>
+
 #include "ash/public/interfaces/constants.mojom.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
+#include "chrome/browser/chromeos/login/reauth_stats.h"
+#include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
 #include "content/public/common/service_manager_connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 
@@ -43,15 +47,10 @@ void LockScreenClient::AuthenticateUser(const AccountId& account_id,
                                         const std::string& hashed_password,
                                         bool authenticated_by_pin,
                                         AuthenticateUserCallback callback) {
-  // TODO(xiaoyinh): Complete the implementation below.
-  // It should be similar as SigninScreenHandler::HandleAuthenticateUser.
-  chromeos::UserContext user_context(account_id);
-  chromeos::Key key(chromeos::Key::KEY_TYPE_SALTED_SHA256_TOP_HALF,
-                    std::string(), hashed_password);
-  user_context.SetKey(key);
-  user_context.SetIsUsingPin(authenticated_by_pin);
-  chromeos::ScreenLocker::default_screen_locker()->Authenticate(
-      user_context, std::move(callback));
+  if (!delegate_)
+    return;
+  delegate_->HandleAuthenticateUser(account_id, hashed_password,
+                                    authenticated_by_pin, std::move(callback));
 }
 
 void LockScreenClient::ShowLockScreen(
@@ -77,6 +76,32 @@ void LockScreenClient::RecordClickOnLockIcon(const AccountId& account_id) {
   delegate_->HandleRecordClickOnLockIcon(account_id);
 }
 
+void LockScreenClient::FocusPod(const AccountId& account_id) {
+  if (!delegate_)
+    return;
+  delegate_->HandleFocusPod(account_id);
+}
+
+void LockScreenClient::NoPodFocused() {
+  if (!delegate_)
+    return;
+  delegate_->HandleNoPodFocused();
+}
+
+void LockScreenClient::LoadWallpaper(const AccountId& account_id) {
+  chromeos::WallpaperManager::Get()->SetUserWallpaperDelayed(account_id);
+}
+
+void LockScreenClient::SignOutUser() {
+  chromeos::ScreenLocker::default_screen_locker()->Signout();
+}
+
+void LockScreenClient::MaxIncorrectPasswordAttempts(
+    const AccountId& account_id) {
+  RecordReauthReason(account_id,
+                     chromeos::ReauthReason::INCORRECT_PASSWORD_ENTERED);
+}
+
 void LockScreenClient::ShowErrorMessage(int32_t login_attempts,
                                         const std::string& error_text,
                                         const std::string& help_link_text,
@@ -110,6 +135,11 @@ void LockScreenClient::LoadUsers(std::unique_ptr<base::ListValue> users_list,
   lock_screen_->LoadUsers(std::move(users_list), show_guest);
 }
 
+void LockScreenClient::SetPinEnabledForUser(const AccountId& account_id,
+                                            bool is_enabled) {
+  lock_screen_->SetPinEnabledForUser(account_id, is_enabled);
+}
+
 void LockScreenClient::SetDelegate(Delegate* delegate) {
   delegate_ = delegate;
 }