Merge "Add Feature Flag for Hearing Aid Profile"

import android.os.RemoteCallbackList;

import android.os.RemoteException;

import android.os.SystemClock;

import android.os.SystemProperties;

import android.os.UserHandle;

import android.os.UserManager;

import android.os.UserManagerInternal;

import android.os.UserManagerInternal.UserRestrictionsListener;

import android.provider.Settings;

import android.provider.Settings.SettingNotFoundException;

import android.text.TextUtils;

import android.util.FeatureFlagUtils;

import android.util.Log;

import android.util.Slog;

import android.util.StatsLog;

        mCallbacks = new RemoteCallbackList<IBluetoothManagerCallback>();

        mStateChangeCallbacks = new RemoteCallbackList<IBluetoothStateChangeCallback>();

        // TODO: We need a more generic way to initialize the persist keys of FeatureFlagUtils

        boolean isHearingAidEnabled;

        String value = SystemProperties.get(FeatureFlagUtils.PERSIST_PREFIX + FeatureFlagUtils.HEARING_AID_SETTINGS);

        if (!TextUtils.isEmpty(value)) {

            isHearingAidEnabled = Boolean.parseBoolean(value);

            Log.v(TAG, "set feature flag HEARING_AID_SETTINGS to " + isHearingAidEnabled);

            FeatureFlagUtils.setEnabled(context, FeatureFlagUtils.HEARING_AID_SETTINGS, isHearingAidEnabled);

        }

        IntentFilter filter = new IntentFilter();

        filter.addAction(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);

        filter.addAction(BluetoothAdapter.ACTION_BLUETOOTH_ADDRESS_CHANGED);