Merge "Change UndoManager mOwners from HashMap to ArrayMap"

import android.os.Parcelable;

import android.os.ParcelableParcel;

import android.text.TextUtils;

import android.util.ArrayMap;

import java.util.ArrayList;

import java.util.HashMap;

/**

 * Top-level class for managing and interacting with the global undo state for

 * @hide

 */

public class UndoManager {

    private final HashMap<String, UndoOwner> mOwners = new HashMap<String, UndoOwner>();

    // The common case is a single undo owner (e.g. for a TextView), so default to that capacity.

    private final ArrayMap<String, UndoOwner> mOwners =

            new ArrayMap<String, UndoOwner>(1 /* capacity */);

    private final ArrayList<UndoState> mUndos = new ArrayList<UndoState>();

    private final ArrayList<UndoState> mRedos = new ArrayList<UndoState>();

    private int mUpdateCount;