Add generic sugar for ArrayMap and ArraySet.

package com.google.android.collect;

import android.util.ArrayMap;

import java.util.HashMap;

/**

    public static <K, V> HashMap<K, V> newHashMap() {

        return new HashMap<K, V>();

    }

    /**

     * Creates a {@code ArrayMap} instance.

     */

    public static <K, V> ArrayMap<K, V> newArrayMap() {

        return new ArrayMap<K, V>();

    }

}

package com.google.android.collect;

import android.util.ArraySet;

import java.util.Collections;

import java.util.EnumSet;

import java.util.HashSet;

        return set;

    }

    /**

     * Creates a {@code ArraySet} instance.

     */

    public static <E> ArraySet<E> newArraySet() {

        return new ArraySet<E>();

    }

    /**

     * Creates a {@code ArraySet} instance containing the given elements.

     */

    public static <E> ArraySet<E> newArraySet(E... elements) {

        int capacity = elements.length * 4 / 3 + 1;

        ArraySet<E> set = new ArraySet<E>(capacity);

        Collections.addAll(set, elements);

        return set;

    }

}