[Tether07] Migrate Tethering into module

Now tethering would be run in dedicated service.
TetheringManager is the interface used to communicate with
TetheringService. The new call flow would be: ConnectivityManager
-> ConnectivityService -> TetheringManager -> TetheringService.
Note: the return value of #tether(), #untether() and #setUsbTethering()
APIs would always be no error. Client can use #getLastTetherError()
or #getTetheredIfaces or listen tether state change to check
status of corresponding interface.

Bug: 136040414
Bug: 144742179
Test: -build, flash, boot
      -atest TetheringTests
      -atest FrameworksNetTests

Change-Id: I7e78c0e0a3e70f940a749ba2a39ece7c7ec5b9b3
Merged-In: I7e78c0e0a3e70f940a749ba2a39ece7c7ec5b9b3

1 files changed, 0 insertions, 109 deletions

diff --git a/services/net/java/android/net/util/VersionedBroadcastListener.java b/services/net/java/android/net/util/VersionedBroadcastListener.java
deleted file mode 100644
index 107c40495f9e..000000000000
--- a/services/net/java/android/net/util/VersionedBroadcastListener.java
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (C) 2017 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.net.util;
-
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.os.Handler;
-import android.util.Log;
-
-import java.util.concurrent.atomic.AtomicInteger;
-import java.util.function.Consumer;
-
-
-/**
- * A utility class that runs the provided callback on the provided handler when
- * intents matching the provided filter arrive. Intents received by a stale
- * receiver are safely ignored.
- *
- * Calls to startListening() and stopListening() must happen on the same thread.
- *
- * @hide
- */
-public class VersionedBroadcastListener {
-    private static final boolean DBG = false;
-
-    public interface IntentCallback {
-        public void run(Intent intent);
-    }
-
-    private final String mTag;
-    private final Context mContext;
-    private final Handler mHandler;
-    private final IntentFilter mFilter;
-    private final Consumer<Intent> mCallback;
-    private final AtomicInteger mGenerationNumber;
-    private BroadcastReceiver mReceiver;
-
-    public VersionedBroadcastListener(String tag, Context ctx, Handler handler,
-            IntentFilter filter, Consumer<Intent> callback) {
-        mTag = tag;
-        mContext = ctx;
-        mHandler = handler;
-        mFilter = filter;
-        mCallback = callback;
-        mGenerationNumber = new AtomicInteger(0);
-    }
-
-    public void startListening() {
-        if (DBG) Log.d(mTag, "startListening");
-        if (mReceiver != null) return;
-
-        mReceiver = new Receiver(mTag, mGenerationNumber, mCallback);
-        mContext.registerReceiver(mReceiver, mFilter, null, mHandler);
-    }
-
-    public void stopListening() {
-        if (DBG) Log.d(mTag, "stopListening");
-        if (mReceiver == null) return;
-
-        mGenerationNumber.incrementAndGet();
-        mContext.unregisterReceiver(mReceiver);
-        mReceiver = null;
-    }
-
-    private static class Receiver extends BroadcastReceiver {
-        public final String tag;
-        public final AtomicInteger atomicGenerationNumber;
-        public final Consumer<Intent> callback;
-        // Used to verify this receiver is still current.
-        public final int generationNumber;
-
-        public Receiver(
-                String tag, AtomicInteger atomicGenerationNumber, Consumer<Intent> callback) {
-            this.tag = tag;
-            this.atomicGenerationNumber = atomicGenerationNumber;
-            this.callback = callback;
-            generationNumber = atomicGenerationNumber.incrementAndGet();
-        }
-
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            final int currentGenerationNumber = atomicGenerationNumber.get();
-
-            if (DBG) {
-                Log.d(tag, "receiver generationNumber=" + generationNumber +
-                        ", current generationNumber=" + currentGenerationNumber);
-            }
-            if (generationNumber != currentGenerationNumber) return;
-
-            callback.accept(intent);
-        }
-    }
-}