Revert "MediaRouter2: Create MediaRouter2A.java for rewriting MediaRouter2"

/*

 * Copyright 2019 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 android.media;

import android.annotation.NonNull;

import android.content.Context;

import com.android.internal.annotations.GuardedBy;

import java.util.Objects;

/**

 * A new media router

 *

 * TODO: Replace MediaRouter2 with this file once the implementation is finished.

 * @hide

 */

public class MediaRouter2A {

    private static final Object sLock = new Object();

    @GuardedBy("sLock")

    private static MediaRouter2A sInstance;

    /**

     * Gets an instance of a MediaRouter.

     */

    public static MediaRouter2A getInstance(@NonNull Context context) {

        Objects.requireNonNull(context, "context must not be null");

        synchronized (sLock) {

            if (sInstance == null) {

                sInstance = new MediaRouter2A(context.getApplicationContext());

            }

            return sInstance;

        }

    }

    private MediaRouter2A(Context appContext) {

        // TODO: Implement this

    }

}

/*

 * Copyright 2019 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.android.mediaroutertest;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertSame;

import android.content.Context;

import android.media.MediaRouter2A;

import android.support.test.InstrumentationRegistry;

import android.support.test.filters.SmallTest;

import android.support.test.runner.AndroidJUnit4;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)

@SmallTest

public class MediaRouter2ATest {

    Context mContext;

    @Before

    public void setUp() throws Exception {

        mContext = InstrumentationRegistry.getTargetContext();

    }

    @After

    public void tearDown() throws Exception {

    }

    @Test

    public void testGetInstance() throws Exception {

        MediaRouter2A router = MediaRouter2A.getInstance(mContext);

        assertNotNull(router);

        // Test that it is singleton.

        MediaRouter2A router2 = MediaRouter2A.getInstance(mContext);

        assertSame(router, router2);

    }

}