InlineFillService: Add a passwords settings activity.

This will be linked to from system settings.

Bug: 169455298
Test: manual
Change-Id: Id0ee7f0b5641c4be02e9b02d1d6bf7d1a8a6ef37

samples/InlineFillService/src/com/example/android/inlinefillservice/PasswordsActivity.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.inlinefillservice;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+public class PasswordsActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.passwords_activity);
+    }
+}