DO NOT MERGE Migrate to androidx namespace for support library.
Also, add a PREUPLOAD.cfg file to lint future changes.
Do not merge this change since the migration has already happened on
master.
Test: build and deploy SystemUpdater
Bug: 77601495
Bug: 77920207
Change-Id: I51eb889092d7b50884fccc329319f61dc0b6bf18
diff --git a/src/com/android/car/systemupdater/SystemUpdaterActivity.java b/src/com/android/car/systemupdater/SystemUpdaterActivity.java
index 91cbe6b..ea4e83a 100644
--- a/src/com/android/car/systemupdater/SystemUpdaterActivity.java
+++ b/src/com/android/car/systemupdater/SystemUpdaterActivity.java
@@ -18,10 +18,11 @@
import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
import java.io.File;