Add getAttributionSource function to mocked context

package android.test;

import android.accounts.AccountManager;

import android.content.AttributionSource;

import android.content.BroadcastReceiver;

import android.content.ContentResolver;

import android.content.Context;

import android.content.ServiceConnection;

import android.content.pm.PackageManager;

import android.net.Uri;

import android.os.Process;

import android.test.mock.MockAccountManager;

import java.io.File;

        return intents;

    }

    @Override

    public AttributionSource getAttributionSource() {

        AttributionSource attributionSource = super.getAttributionSource();

        if (attributionSource == null) {

            return new AttributionSource.Builder(Process.myUid()).build();

        }

        return attributionSource;

    }

    @Override

    public ContentResolver getContentResolver() {

        // We need to return the real resolver so that MailEngine.makeRight can get to the