Adding mojo calls for several lock screen related operations.

ash/login/mock_lock_screen_client.h

Index: ash/login/mock_lock_screen_client.h
diff --git a/ash/login/mock_lock_screen_client.h b/ash/login/mock_lock_screen_client.h
index 3900dafaa3542b0ca7490ef0cf396488b0158ff4..41de633252bfc6810ba310ca1425148abcca7a31 100644
--- a/ash/login/mock_lock_screen_client.h
+++ b/ash/login/mock_lock_screen_client.h
@@ -26,6 +26,11 @@ class MockLockScreenClient : public mojom::LockScreenClient {
   MOCK_METHOD1(AttemptUnlock, void(const AccountId& account_id));
   MOCK_METHOD1(HardlockPod, void(const AccountId& account_id));
   MOCK_METHOD1(RecordClickOnLockIcon, void(const AccountId& account_id));
+  MOCK_METHOD1(FocusPod, void(const AccountId& account_id));
+  MOCK_METHOD0(NoPodFocused, void());
+  MOCK_METHOD1(LoadWallpaper, void(const AccountId& account_id));
+  MOCK_METHOD0(SignOutUser, void());
+  MOCK_METHOD1(MaxIncorrectPasswordAttempts, void(const AccountId& account_id));
 
  private:
   mojo::Binding<ash::mojom::LockScreenClient> binding_;