Add initial local archive export support.

app/src/main/java/androidx/documentfile/provider/DocumentFileHelper.java

@@ -1,38 +0,0 @@
-package androidx.documentfile.provider;
-
-import android.content.Context;
-import android.net.Uri;
-import android.provider.DocumentsContract;
-
-import org.signal.core.util.logging.Log;
-
-/**
- * Located in androidx package as {@link TreeDocumentFile} is package protected.
- */
-public class DocumentFileHelper {
-
-  private static final String TAG = Log.tag(DocumentFileHelper.class);
-
-  /**
-   * System implementation swallows the exception and we are having problems with the rename. This inlines the
-   * same call and logs the exception. Note this implementation does not update the passed in document file like
-   * the system implementation. Do not use the provided document file after calling this method.
-   *
-   * @return true if rename successful
-   */
-  public static boolean renameTo(Context context, DocumentFile documentFile, String displayName) {
-    if (documentFile instanceof TreeDocumentFile) {
-      Log.d(TAG, "Renaming document directly");
-      try {
-        final Uri result = DocumentsContract.renameDocument(context.getContentResolver(), documentFile.getUri(), displayName);
-        return result != null;
-      } catch (Exception e) {
-        Log.w(TAG, "Unable to rename document file", e);
-        return false;
-      }
-    } else {
-      Log.d(TAG, "Letting OS rename document: " + documentFile.getClass().getSimpleName());
-      return documentFile.renameTo(displayName);
-    }
-  }
-}