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 60bbac1c958d7b13189707f67b0547ae0a484314..48d137541642558c21cad397921e69197cebba5a 100644
--- a/ash/login/mock_lock_screen_client.h
+++ b/ash/login/mock_lock_screen_client.h
@@ -37,6 +37,12 @@ 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(OnFocusPod, void(const AccountId& account_id));
+  MOCK_METHOD0(OnNoPodFocused, void());
+  MOCK_METHOD1(LoadWallpaper, void(const AccountId& account_id));
+  MOCK_METHOD0(SignOutUser, void());
+  MOCK_METHOD1(OnMaxIncorrectPasswordAttempted,
+               void(const AccountId& account_id));
 
  private:
   bool authenticate_user_callback_result_ = true;