Adding mojo calls for several lock screen related operations.

ash/login/lock_screen_controller.cc

Index: ash/login/lock_screen_controller.cc
diff --git a/ash/login/lock_screen_controller.cc b/ash/login/lock_screen_controller.cc
index 8b99e6fd7acf0d3f385745d9db2b6a8723ecf888..cabe080998360458d96770a6fd83568bf847ae43 100644
--- a/ash/login/lock_screen_controller.cc
+++ b/ash/login/lock_screen_controller.cc
@@ -53,6 +53,11 @@ void LockScreenController::LoadUsers(std::unique_ptr<base::ListValue> users,
   NOTIMPLEMENTED();
 }
 
+void LockScreenController::SetPinEnabledForUser(const AccountId& account_id,
+                                                bool is_enabled) {
+  NOTIMPLEMENTED();
+}
+
 void LockScreenController::AuthenticateUser(const AccountId& account_id,
                                             const std::string& password,
                                             bool authenticated_by_pin) {
@@ -82,6 +87,37 @@ void LockScreenController::RecordClickOnLockIcon(const AccountId& account_id) {
   lock_screen_client_->RecordClickOnLockIcon(account_id);
 }
 
+void LockScreenController::FocusPod(const AccountId& account_id) {
+  if (!lock_screen_client_)
+    return;
+  lock_screen_client_->FocusPod(account_id);
+}
+
+void LockScreenController::NoPodFocused() {
+  if (!lock_screen_client_)
+    return;
+  lock_screen_client_->NoPodFocused();
+}
+
+void LockScreenController::LoadWallpaper(const AccountId& account_id) {
+  if (!lock_screen_client_)
+    return;
+  lock_screen_client_->LoadWallpaper(account_id);
+}
+
+void LockScreenController::SignOutUser() {
+  if (!lock_screen_client_)
+    return;
+  lock_screen_client_->SignOutUser();
+}
+
+void LockScreenController::MaxIncorrectPasswordAttempts(
+    const AccountId& account_id) {
+  if (!lock_screen_client_)
+    return;
+  lock_screen_client_->MaxIncorrectPasswordAttempts(account_id);
+}
+
 void LockScreenController::DoAuthenticateUser(const AccountId& account_id,
                                               const std::string& password,
                                               bool authenticated_by_pin,